diff --git a/src/services/command.ts b/src/services/command.ts
index f628c55..f7382d8 100644
--- a/src/services/command.ts
+++ b/src/services/command.ts
@@ -206,14 +206,14 @@ export class CommandService {
         if (items.length === 0) {
           return [{
             recipient: context.sender,
-            message: `No hay tareas sin dueño en ${groupName}.`
+            message: `No hay tareas sin responsable en ${groupName}.`
           }];
         }
 
         const rendered = items.map((t) => {
           const isOverdue = t.due_date ? t.due_date < todayYMD : false;
           const datePart = t.due_date ? ` — ${isOverdue ? `${ICONS.warn} ` : ''}${ICONS.date} ${formatDDMM(t.due_date)}` : '';
-          return `- ${t.id}) “*${t.description || '(sin descripción)'}*”${datePart} — ${ICONS.unassigned} sin dueño`;
+          return `- ${t.id}) _${t.description || '(sin descripción)'}_${datePart} — ${ICONS.unassigned} sin responsable`;
         });
 
         const total = TaskService.countGroupUnassigned(context.groupId);
@@ -223,7 +223,7 @@ export class CommandService {
 
         return [{
           recipient: context.sender,
-          message: [`${groupName} — Sin dueño`, ...rendered].join('\n')
+          message: [`${groupName} — Sin responsable`, ...rendered].join('\n')
         }];
       }
 
@@ -258,11 +258,11 @@ export class CommandService {
               );
               const owner =
                 (t.assignees?.length || 0) === 0
-                  ? `${ICONS.unassigned} sin dueño`
+                  ? `${ICONS.unassigned} sin responsable`
                   : `${t.assignees!.length > 1 ? '👥' : '👤'} ${names.join(', ')}`;
               const isOverdue = t.due_date ? t.due_date < todayYMD : false;
               const datePart = t.due_date ? ` — ${isOverdue ? `${ICONS.warn} ` : ''}${ICONS.date} ${formatDDMM(t.due_date)}` : '';
-              return `- ${t.id}) “*${t.description || '(sin descripción)'}*”${datePart} — ${owner}`;
+              return `- ${t.id}) _${t.description || '(sin descripción)'}_${datePart} — ${owner}`;
             }));
             sections.push(...rendered);
           }
@@ -283,11 +283,11 @@ export class CommandService {
             const groupName = GroupSyncService.activeGroupsCache.get(context.groupId) || context.groupId;
             const unassigned = TaskService.listGroupUnassigned(context.groupId, LIMIT);
             if (unassigned.length > 0) {
-              sections.push(`${groupName} — Sin dueño`);
+              sections.push(`${groupName} — Sin responsable`);
               const renderedUnassigned = unassigned.map((t) => {
                 const isOverdue = t.due_date ? t.due_date < todayYMD : false;
                 const datePart = t.due_date ? ` — ${isOverdue ? `${ICONS.warn} ` : ''}${ICONS.date} ${formatDDMM(t.due_date)}` : '';
-                return `- ${t.id}) “*${t.description || '(sin descripción)'}*”${datePart} — ${ICONS.unassigned} sin dueño`;
+                return `- ${t.id}) _${t.description || '(sin descripción)'}_${datePart} — ${ICONS.unassigned} sin responsable`;
               });
               sections.push(...renderedUnassigned);
 
@@ -296,12 +296,12 @@ export class CommandService {
                 sections.push(`… y ${totalUnassigned - unassigned.length} más`);
               }
             } else {
-              sections.push(`${groupName} — Sin dueño\n(no hay tareas sin dueño)`);
+              sections.push(`${groupName} — Sin responsable\n(no hay tareas sin responsable)`);
             }
           }
         } else {
           // En DM: nota instructiva
-          sections.push('ℹ️ Para ver tareas sin dueño de un grupo, usa “/t ver sin” desde ese grupo.');
+          sections.push('ℹ️ Para ver tareas sin responsable de un grupo, usa “/t ver sin” desde ese grupo.');
         }
 
         return [{
@@ -340,11 +340,11 @@ export class CommandService {
           );
           const owner =
             (t.assignees?.length || 0) === 0
-              ? `${ICONS.unassigned} sin dueño`
+              ? `${ICONS.unassigned} sin responsable`
               : `${t.assignees!.length > 1 ? '👥' : '👤'} ${names.join(', ')}`;
           const isOverdue = t.due_date ? t.due_date < todayYMD : false;
           const datePart = t.due_date ? ` — ${isOverdue ? `${ICONS.warn} ` : ''}${ICONS.date} ${formatDDMM(t.due_date)}` : '';
-          return `- ${t.id}) “*${t.description || '(sin descripción)'}*”${datePart} — ${owner}`;
+          return `- ${t.id}) _${t.description || '(sin descripción)'}_${datePart} — ${owner}`;
         }));
 
         const total = TaskService.countGroupPending(context.groupId);
@@ -391,11 +391,11 @@ export class CommandService {
           );
           const owner =
             (t.assignees?.length || 0) === 0
-              ? `${ICONS.unassigned} sin dueño`
+              ? `${ICONS.unassigned} sin responsable`
               : `${t.assignees!.length > 1 ? '👥' : '👤'} ${names.join(', ')}`;
           const isOverdue = t.due_date ? t.due_date < todayYMD : false;
           const datePart = t.due_date ? ` — ${isOverdue ? `${ICONS.warn} ` : ''}${ICONS.date} ${formatDDMM(t.due_date)}` : '';
-          return `- ${t.id}) “*${t.description || '(sin descripción)'}*”${datePart} — ${owner}`;
+          return `- ${t.id}) _${t.description || '(sin descripción)'}_${datePart} — ${owner}`;
         }));
         sections.push(...rendered);
       }
@@ -434,14 +434,14 @@ export class CommandService {
         const due = res.task?.due_date ? ` — 📅 ${formatDDMM(res.task?.due_date)}` : '';
         return [{
           recipient: context.sender,
-          message: `ℹ️ ${id} ya estaba completada — “*${res.task?.description || '(sin descripción)'}*”${due}`
+          message: `ℹ️ ${id} ya estaba completada — _${res.task?.description || '(sin descripción)'}_${due}`
         }];
       }
 
       const due = res.task?.due_date ? ` — 📅 ${formatDDMM(res.task?.due_date)}` : '';
       return [{
         recipient: context.sender,
-        message: `${ICONS.complete} ${id} completada — “*${res.task?.description || '(sin descripción)'}*”${due}\nGracias, ${who}.`
+        message: `${ICONS.complete} ${id} completada — _${res.task?.description || '(sin descripción)'}_${due}\nGracias, ${who}.`
       }];
     }
 
@@ -468,19 +468,19 @@ export class CommandService {
       if (res.status === 'completed') {
         return [{
           recipient: context.sender,
-          message: `ℹ️ ${id} ya estaba completada — “*${res.task?.description || '(sin descripción)'}*”${due}`
+          message: `ℹ️ ${id} ya estaba completada — _${res.task?.description || '(sin descripción)'}_${due}`
         }];
       }
       if (res.status === 'already') {
         return [{
           recipient: context.sender,
-          message: `ℹ️ ${id} ya la tenías — “*${res.task?.description || '(sin descripción)'}*”${due}`
+          message: `ℹ️ ${id} ya la tenías — _${res.task?.description || '(sin descripción)'}_${due}`
         }];
       }
 
       return [{
         recipient: context.sender,
-        message: `${ICONS.take} Has tomado ${id} — “*${res.task?.description || '(sin descripción)'}*”${due}`
+        message: `${ICONS.take} Has tomado ${id} — _${res.task?.description || '(sin descripción)'}_${due}`
       }];
     }
 
@@ -513,20 +513,20 @@ export class CommandService {
       if (res.status === 'not_assigned') {
         return [{
           recipient: context.sender,
-          message: `ℹ️ ${id} no la tenías asignada — “*${res.task?.description || '(sin descripción)'}*”${due}`
+          message: `ℹ️ ${id} no la tenías asignada — _${res.task?.description || '(sin descripción)'}_${due}`
         }];
       }
 
       if (res.now_unassigned) {
         return [{
           recipient: context.sender,
-          message: `${ICONS.unassigned} ${id} queda sin dueño — “*${res.task?.description || '(sin descripción)'}*”${due}`
+          message: `${ICONS.unassigned} ${id} queda sin responsable — _${res.task?.description || '(sin descripción)'}_${due}`
         }];
       }
 
       return [{
         recipient: context.sender,
-        message: `${ICONS.unassign} Has soltado ${id} — “*${res.task?.description || '(sin descripción)'}*”${due}`
+        message: `${ICONS.unassign} Has soltado ${id} — _${res.task?.description || '(sin descripción)'}_${due}`
       }];
     }
 
@@ -661,12 +661,12 @@ export class CommandService {
     const responses: CommandResponse[] = [];
 
     // 1) Ack al creador con formato compacto
-    const ackHeader = `${ICONS.create} ${taskId} “*${description || '(sin descripción)'}*”`;
+    const ackHeader = `${ICONS.create} ${taskId} _${description || '(sin descripción)'}_`;
     const ackLines: string[] = [ackHeader];
     const dueFmt = formatDDMM(dueDate);
     if (dueFmt) ackLines.push(`${ICONS.date} ${dueFmt}`);
     if (assignmentUserIds.length === 0) {
-      ackLines.push(`${ICONS.unassigned} sin dueño${groupName ? ` (${groupName})` : ''}`);
+      ackLines.push(`${ICONS.unassigned} sin responsable${groupName ? ` (${groupName})` : ''}`);
     } else {
       const assigneesList = assignedDisplayNames.join(', ');
       ackLines.push(`${assignmentUserIds.length > 1 ? '👥' : '👤'} ${assigneesList}`);
@@ -684,7 +684,7 @@ export class CommandService {
         recipient: uid,
         message: [
           `${ICONS.assignNotice} Tarea ${taskId}${formatDDMM(dueDate) ? ` — ${ICONS.date} ${formatDDMM(dueDate)}` : ''}`,
-          `“*${description || '(sin descripción)'}*”`,
+          `_${description || '(sin descripción)'}_`,
           groupName ? `Grupo: ${groupName}` : null,
           `Completar: /t x ${taskId}`
         ].filter(Boolean).join('\n'),
diff --git a/src/services/reminders.ts b/src/services/reminders.ts
index d063851..03cf01c 100644
--- a/src/services/reminders.ts
+++ b/src/services/reminders.ts
@@ -139,11 +139,11 @@ export class RemindersService {
             );
             const owner =
               (t.assignees?.length || 0) === 0
-                ? `${ICONS.unassigned} sin dueño`
+                ? `${ICONS.unassigned} sin responsable`
                 : `${t.assignees!.length > 1 ? '👥' : '👤'} ${names.join(', ')}`;
             const isOverdue = t.due_date ? t.due_date < todayYMD : false;
             const datePart = t.due_date ? ` — ${isOverdue ? `${ICONS.warn} ` : ''}${ICONS.date} ${formatDDMM(t.due_date)}` : '';
-            return `- ${t.id}) “*${t.description || '(sin descripción)'}*”${datePart} — ${owner}`;
+            return `- ${t.id}) _${t.description || '(sin descripción)'}_${datePart} — ${owner}`;
           }));
           sections.push(...rendered);
         }
diff --git a/tests/unit/server.test.ts b/tests/unit/server.test.ts
index c87a450..e437e20 100644
--- a/tests/unit/server.test.ts
+++ b/tests/unit/server.test.ts
@@ -834,7 +834,7 @@ describe('WebhookServer', () => {
         expect(r.recipient.endsWith('@g.us')).toBe(false);
       }
       const msg = out.map(x => x.message).join('\n');
-      expect(msg).toContain('sin dueño');
+      expect(msg).toContain('sin responsable');
       expect(msg).toContain('… y 2 más');
     });
 
@@ -903,7 +903,7 @@ describe('WebhookServer', () => {
       expect(out.length).toBeGreaterThan(0);
       const msg = out.map(x => x.message).join('\n');
       expect(msg).toContain('Tus tareas');
-      expect(msg).toContain('sin dueño');
+      expect(msg).toContain('sin responsable');
       expect(msg).toContain('… y 2 más');
     });
 
@@ -933,7 +933,7 @@ describe('WebhookServer', () => {
       expect(out.length).toBeGreaterThan(0);
       const msg = out.map(x => x.message).join('\n');
       expect(msg).toContain('Tus tareas');
-      expect(msg).toContain('ℹ️ Para ver tareas sin dueño');
+      expect(msg).toContain('ℹ️ Para ver tareas sin responsable');
     });
   });
 });
diff --git a/tests/unit/services/command.claim-unassign.test.ts b/tests/unit/services/command.claim-unassign.test.ts
index 88cad2f..c95eb8e 100644
--- a/tests/unit/services/command.claim-unassign.test.ts
+++ b/tests/unit/services/command.claim-unassign.test.ts
@@ -89,7 +89,7 @@ describe('CommandService - /t tomar y /t soltar', () => {
   it('soltar: si queda sin dueño, mensaje adecuado', async () => {
     const taskId = createTask('Desc soltar', '999', '2025-09-12', ['111']);
     const res = await CommandService.handle(ctx('111', `/t soltar ${taskId}`));
-    expect(res[0].message).toContain('queda sin dueño');
+    expect(res[0].message).toContain('queda sin responsable');
     expect(res[0].message).toContain(String(taskId));
   });