| Abrogation | abrogation |
| Abrasion | abrasion |
| Abreaktion | abreaction |
| Fabrikation | production |
| Surrogation | subrogation |
| Obligation | bond obligation |
| Aggregation | aggregation |
| Irrigation | irrigation |
| Akrobatin | acrobat |
| Annotation | annotation |
| Abdikation | abdication |
| Aberration | aberration |
| Abjuration | abjuration |
| Ablation | ablation amputation surgical incision surgical removal |
| Adoration | adoration |
| Allokation | allocation |
| Approbation | licence to practise medicine |
| Automation | automation |
| Rotation | rotation |
| Abolition | abolition |