| Amnesty | Pardon Acquittal |
| Aberration | Deviance Abnormality |
| Abate | Weaken Decrease Lessen Let up Slack off Vs. Intensify Strengthen |
| Ablaze | Alight aflame Shining Illuminated |
| Abortive | Fruitless Unsuccessful |
| Aboveboard | Honest Open Straight-forward Honorable Vs. Deceitful Underhanded Sly |
| Abridge | Reduce Shorten Abbreviate Contract Condense |
| Absolve | Acquit Vs. Blame Convict |
| Abstain | Refrain Desist Vs. Indulge |
| Abstruse | Deep Recondite Esoteric |