| A | B |
| acerbus, -a, -um | bitter |
| aedes, aedis | temple, house |
| aeger, aegra, aegrum | sick, ill, weary, love-sick |
| aeneus, aenea, aeneum | made of bronze |
| aequor, aequoris | air |
| aer, aeris | air |
| aes, aeris | bronze, money |
| aestus, aestus | boiling, heat, surging sea, passion |
| aether, aetheris | air, sky |
| aevum, aevi | age, period of time, life |
| agnus, agni | lamb |
| agrestis, agreste | rustic, of the countryside |
| ait,plural aiunt | he/she says |
| albus, alba, album | white |
| ales, alitis | bird |
| amens, amentis | out of one's mind, mad, frantic |
| amnis, amnis | stream, river |
| amoenus, amoena, amoenum | pleasant, charming |
| amplexus, amplexus | embrace |
| anguis, anguis | snake |
| anima, animae | soul, spirit, breath, life |
| antiquus, antiqua, antiquum | ancient, previous |
| antrum, antri | cave |
| apricus,, aprica, apricum | sunny, warm |
| apto, aptare, aptavi, aptatum | fit, adjust |
| aquilo, aquilionis | the north wind |
| arduus, ardua, arduum | high, steep, difficult |
| armentum, armenti | herd of cattle |
| artus, artus | limb |
| arva, arvorum | fields, land |
| astrum, astri | star, constellation |
| ater, atra, atrum | black, dark |
| aura, aurae | breeze, air |
| auris, auris | ear |
| aurora, aurorae | dawn |
| auster, austri | the south wind |
| axis, axis | axis, axle, chariot, sky, heaven |
|