| Automatismus | automatism |
| Autoerotismus | autoeroticism autoerotism |
| automatisch | automatic automatically |
| Achromatismus | achromaticity achromatism |
| Astigmatismus | astigmatism |
| automagisch | automagical |
| Autismus | autism |
| Automatik | automatism automatic automatic transmission |
| Automation | automation |
| Automobilismus | automobilism |
| Autoritarismus | authoritarianism |
| Autotropismus | autotropism |
| Utopismus | utopianism |
| Aposematismus | aposematism |
| Sarmatismus | Sarmatism |
| Agrammatismus | agrammatism |
| Pragmatismus | pragmatism |
| Rheumatismus | rheumatism |
| Suprematismus | suprematism |
| Donatismus | Donatism |