| A | B |
| a la carte | individual items off a menu (as opposed to complete dinners) |
| a propo | at the right time; opportunely |
| Achilles' heel | an area that is vulnerable |
| ad lib | improvised; without preparation |
| ad nauseam | to the point of nausea |
| aficionado | an enthusiast or fan |
| al fresco | in the open air; outside |
| ad hoc | for the specific purpose or situation; formed or created with a specific purpose in mind |
| ad infinitum | to infinity; goes on forever |
| ad valorem | in proportion to the value; according to the worth |
| alter ego | another I; a second self |
| ambiance | literally surroundings; mood, character, atmosphere |
| au contraire | on the contrary |
| au naturel | in the natural state; served plainly; nude |
| avante-garde | French for "the front garde"; a progressive artistic movement; radically original |
| bon appetit | good appetite |
| bon voyage | litterally "good journey"; farewell |
| bona fide | genuine; real; in good faith |
| bourgeois | french for "townsman"; member of the middle class |
| carpe diem | make use of the day; seize the day |