| Aberration | aberration |
| Aberratio | aberration |
| Abjuration | abjuration |
| Überreaktion | overreaction |
| Hibernation | hibernation |
| Adoration | adoration |
| Aspiration | aspiration |
| Iteration | iteration |
| Operation | surgery operation |
| Abdikation | abdication |
| Ablation | ablation amputation surgical incision surgical removal |
| Abrogation | abrogation |
| Abreaktion | abreaction |
| Absorption | absorption |
| Abstraktion | abstraction |
| Abrasion | abrasion |
| Abelitin | Abelian |
| aberrante | aberrant |
| Aberraute | Kiss-me-quick-and-go maiden’s ruin |
| abermalig | repeated |