| acordo de cavalheiros | gentleman's agreement |
| Acordo de Cotonou | Cotonou Agreement |
| Acordo de Dayton | Dayton Agreement |
| Acordo de Munique | Munich Agreement |
| Acordo de Nkomati | Nkomati Accord |
| Acordo de não divulgação | Non-disclosure agreement |
| Acordo de Schengen | Schengen Agreement |
| acordo de silêncio | conspiracy of silence |
| Acordo de Taif | Taif Agreement |
| acordo extra-judicial | out-of-court settlement |
| Acordo Faysal-Weizmann | Faisal-Weizmann Agreement |
| Acordo Geral de Paz | Rome General Peace Accords |
| Acordo Geral de Tarifas e Comércio | General Agreement on Tariffs and Trade |
| Acordo Geral sobre Comércio de Serviços | General Agreement on Trade in Services |
| Acordo Ryti-Ribbentrop | Ryti-Ribbentrop Agreement |
| acordo secreto | cahootsve |
| Acordo Sykes-Picot | Sykes-Picot Agreement |
| Acordo TRIPs | Agreement on Trade-Related Aspects of Intellectual Property Rights |
| acordoiro | accord |
| acordos | agreement |
| Acordos de Bretton Woods | Bretton Woods system |
| Acordos de Lusaka | Lusaka Protocol |
| Acordos de paz de Oslo | Oslo Accords |
| acordos económicos | agreement |
| acordos internacionais | international agreement |
| acordos multilaterais | multilateral agreement |
| Acordos SALT | Strategic Arms Limitation Talks |
| Acorn Computers | Acorn Computers |
| acorrentado | chained |
| acorrentar | shackle |
| acortinar | drape |
| acosmismo | acosmism |
| acosmista | acosmist |
| acostamento | rest area |
| acostumado | used |
| acostumar | to inuree |
| acostumar-se | settle down |
| acostume | accustom |
| acotiledónea | acotyledon |
| acotiledóneo | acotyledonous |
| acotiledônea | acotyledon |
| acotiledôneo | acotyledonous |
| acovardar-se | chicken out |
| ACPI | Advanced Configuration and Power Interface |
| acqua alta | acqua alta |
| Acquaride | Water ride |
| Acquarossa | Acquarossa |
| Acqui Terme | Acqui Terme |
| Acra | Accra |
| Acrab | Beta Scorpii |
| acral | acral |
| acrania | acrania |
| acrasia | acrasia |
| acre | biting |
| acrecional | accretionary |
| acrecionário | accretionary |
| acreditar | accept |
| acreditar em | believe in |
| acreditar em Deus | believe in God |
| acreditar emuiser | increase |
| acredite | believe |
| acredite se quiser | increase |
| acreditável | credible |
| acrescentado | added |
| acrescentar | add |
