| Antonomasie | antonomasia |
| Antinomie | antinomy |
| Antonymie | antonymy |
| Autonomie | autonomy |
| antonymisch | antonymic |
| antinomisch | antithetic |
| Autonomist | autonomist |
| Autonomistin | autonomist |
| Agronomie | agronomy |
| Astronomie | astronomy |
| Anomalie | anomaly |
| Achromasie | achromia achromatopsia achromatism achromatopia achromaticity |
| Atommasse | atomic mass |
| Antiphrase | antiphrasis |
| Antiphrasis | antiphrasis |
| Antonius | Antonius |
| Antrologie | arthrology |
| Kantonese | Cantonese |
| Kantonesin | Cantonese |
| Anthologie | anthology |