| Português | Español | Français | English |
| Concordar | Concordar; Avenir; Convergir; Acordar; Admitir; Aprobar | Être d´accord | To agree |
| Concorrer | Concurrir; Competir; Afluir | Concurrencer | To compete; To rival; To contest; To meet |
| Concretizar | Concretar; Efectuar; Formalizar | Concrétiser | To make concrete |
| Condecorar | Condecorar; Decorar | Décorer; Médailler | To decorate; To distinguish |
| Condenar | Condenar; Reprobrar; Sentenciar; Obligar | Condamner; Critiquer | To condemn |
| Condensar | Condensar; Rsumir; Apelmazar | (se)Condenser | To condense; To compact |
| Condimentar | Condimentar; Aderezar | Assaisonner | To season |
| Conduzir | Conducir; Administrar; Dirigir- | (se)Conduire | To conduct; To lead; To transmit; To drive |
| Conectar | Conectar; Enchuflar | Connecter | To connect |
| Conferir | Conferir; Dar; Conceder; Atribuir | Vérifier; Examiner; Conferer; Attribuer | To confer; To check |
| Confessar | Confesar(se); Reconocer; Declarar | (se)Confesser; Avouer | To confess |
| Confiar | Confiar; Encomendar | Faire confiance | To trust; To believe in |
| Confinar | Confinar; Lindar; Rayar | Confiner | To confine; To limit; To circumscribe |
| Confirmar | Confirmar; Comprobar; Ratificar | Confirmer | To confirm |
| Confiscar | Confiscar; Decomisar | Confisquer | To confiscate; To size |
| Confortar | Confortar; Robustecer | Conforter; Encourager | To confort; To console |
| Confrontar | Confrontar; Afrontar; Cotejar; Comaprar | Confronter | To confront; To face; To compare |
| Confundir | Confundir; Complicar; Barajar; Equivocar | (se)Confondre | To confound; To disarray; To perplex; To baffle |
| Congelar | Congelar; Helar; Solidificar | (se)Congeler | To freeze; To become frozen |
| Congestionar | Congestionar; Inyectar | Embouteiller | To congest |
| Congregar | Congregar; Juntar; Unir; Reunir(se) | Convoquer; Appeler; se Réunir | To assemble |
| Conhecer | Conocer; Saber | Connaître | To know |
| Conquistar | Conquistar; Ganar; Dominar | Conquérir | To conquer |
| Conseguir | Conseguir; Llegar; Obtener | Réussir | To obtain; To get; To achieve |
| Consentir | Consentir; Acceder; Admitir; Dejar; Permitir; Tolerar | Consentir | To consent; To permit; To agree; To allow |
| Consertar | Arreglar; Comparar; Remendar; Reformar | Réparer | To repair; To mend; To patch up |
| Conservar | Conservar; Almacenar; Preservar; Cuidar | (se)Conserver | To conserve; To maintain; To preserve; To keep |
| Considerar | Considerar; Atender; Respetar; Ponderar; Opinar | (se)Considérer; Examiner; Estimer; Respecter | To consider; To ponder |
| Consolar | Consolar; Confortar; Aliviar | (se)Consoler; Soulager; Conforter; | To console; To comfort |
| Consolidar | Consolidar; Fortalecer | (se)Consolider | To consolidate |
| Conspirar | Conspirar; Tramar; Confabular | Conspirer | To plot |
| Constatar | Constatar; Comprobar; Verificar | Constater | To evidence; To verify |
| Constituir | Constituir; Instituir | Constituer | To constitute; To form; To establish |
| Construir | Construir; Edificar; | Construire | To construct; To build; To erect |
| Consumir | Consumir; Comer | Consommer | To consume; To eat; To spend |
| Contagiar | Contagiar; Inocular | Contagionner | To infect; To contaminate |
| Contaminar | Contaminar; Infectar; Infestar | Contaminer | To contaminate; To infect |
| Contar | Contar; Enumerar; Narrar; Relatar; Referir(se) | Compter; Nombrer; Prévopir; Raconter | To count; To calculate; To reckon; To score; To tell; To confide; To depend on |
| Contemplar | Contemplar; Admirar | Contempler | To contemplate |
| Conter | Contener; Comportar; | Contenir | To contain; To refrain |
| Contestar | Contestar; Impugnar; Controvertir | Contester | To contest; To refute; To object; To impugn; To disprove |
| Continuar | Continuar; Permanecer; Proseguir | Continuer | To continue; To hold on |
| Contrabandear | Contrabandear | Faire de la contrebande | To smuggle |
| Contradizer | Contradecir; Contrariar; Desmentir | (se)Contredire | To contradict |
| Contrair | Contraer; Encoger; Astringir | Contracter | To contract; To Tighten; To compress; To reduce; |
| Contrapor | Contraponer(se); Oponer; | Opposer; Confronter | To put against |
| Contrariar | Contrariar; Resistir; Combatir | Contrarier | To counter; To oppose; To refute; To contradict; To frustrate |
| Contrastar | Contrastar; Oponer | Contraster | To contrast |
| Contratar | Contratar; | Emboucher | To contract; To hire; To chart |
| Contribuir | Contribuir; Subscribir; Ofrendar | Contribuer | To contribute; To pay taxes |
| Controlar | Controlar; Fiscalizar | (se)Contrôler | To control |
| Convalescer | Convalecer | Entrer en convalescence | To convalesce |
| Convencer | Convercer; Envolver; Persuadir | (se)Convaincre | To convince; To persuade |
| Convencionar | Combinar; Comvenir; Contratar | Stipuler; Préciser; Combiner; | To stipulate |
| Convergir | Convergir; Converger; Afluir | Converger | To converge |
| Conversar | Conversar; Charlar | Bavarder | To talk; To converse; To confabulate |
| Converter | Convertir; Inmutar | (se)Convertir | To convert; To transform |
| Convidar | Convidar(se); Invidar; Solicitar | Inviter | To invite; To ask |
| Conviver | Convivir | Cohabiter; Vivre avec | To live together |
| Convocar | Convocar; Llamar | Convoquer | To convoke; To summon |
| Cooperar | Cooperar; Contribuir; Colaborar | Coopérer; Collaborer | To cooperate |
| Coordenar | Coordinar; Arreglar; Componer; Organizar | Coordonner | To coordinate |
| Copiar | Copiar; Duplicar; Imitar; Plagiar; Reproducir | Copier | To copyu; To reproduce |
| Copular | Copular | Copuler | To copulate |
| Corar | Enrojecer; Ruborizar; Sonrojar | Rougir | To colour; To blush |
| Coroar | Coronar | Couronner | To crown; To reward |
| Correr | Correr; Afluir | Courir | To run; To pass along; To spread; To elapse; to flow; To leak |
| Corresponder | Corresponder; Equivaler | (se)Correspondre | To correspond |
| Corrigir | Corrigir; Rehacer; | (se)Corriger | To correct. To censure; To revise |
| Corroer | Corroer; Roer; Desgastar; Consumirse | Ronger; Manger; Corroder | To corrode; To destroy slowly |
| Corromper | Corromper; Depravar; Adulterar; Averiar; Viviar; Seducir; Sobornar | Corrompre | To corrupt; To adulterate |
| Cortar | Cortar; Acortar; Aparar; Dividir; Escindir; Podar; Picar | Couper; Traversser; Croiser; Interrompre | To cut; To cross; To shoot off; To turn off |
| Cortejar | Cortejar; Enamorar; Galantear; Pretender | Faire la cour; Courtiser | To greet; To flirt with; To court |
| Coser | Coser; Zurcir | Cuire | To sew; To Stitch |
| Costear | Costear; Bordear; Rodear | Côtoyer; Suivre la côte | To coast; To round; To go along |
| Costurar | Coser; Laborar; Zurcir; Costurar (AL) | Coudre | To sew |
| Cozer | Cocer | Coudre | To cook; To boil; To bake |
| Cozinhar | Cocer; cocinar | Cuisiner | To cook; To stew |
| Creditar | Abonar; Acreditar | Garantir; Créditer | To guarantee, To credit |
| Crer | Creer; Confiar | Croire | To believe; To presume |
| Crescer | Crecer; Aumentar | Croitre; Augmenter | To grow; To increase |
| Criar | Crear; Elaborar | Créer | To create; To produce; To invent |
| Criticar | Criticar; Maldecir | Critiquer | To critisize; To review |
| Cruzar | Cruzar; Atravesar | Croiser | To cross |
| Cuidar | Cuidar; Preservar; Vigilar | (se)Soigner | To care; To take care of; To look after |
| Culpar | Culpar; Acusar; | Inculper; Incriminer; Responsabiliser | To acuse; To incriminate; To blame |
| Cultivar | Cultivar | Cultiver | To cultivate |
| Cumprimentar | Cumplimentar; Felicitar; Saludar | Saluer; Complimenter; Feliciter | To salute; To greet; To congratulate |
| Cumprir | Cumplir; Mantener; Respetar | Accomplir; Exécuter; Remplir | To execute; To carry out; To perform |
| Cunhar | Acuñar; Batir | Battre; Frapper | To coin; To mint |
| Curar | Curar; Curtir las pieles | (se)Guérir | To cure; To heal |
| Cursar | Cursar; Frecuentar | Courir; Parcourir; Suivre un cours | To course; To follow a course |
| Curtir | Curtir | Tanner | To tan; To harden; To enjoy |
| Curvar | Curvar; Encorvar; Arquear; Flexionar; Combar | (se)Pencher; Se plier | To curve; To bend; To bow; To incline |
| Cuspir | Escupir | Cracher | To spit |
| Custar | Costar; Valer | Coûter | To cost; To be worth |
| Custear | Costear; Patrocinar; Sufragar | Faire les frais de | To finance |