| A | B |
| accrete | to increase by growth, or addition; adhere |
| accrue | to accumulate over time |
| acerbic | sour; bitter; severe |
| acme | the highest point |
| acquiesce | to agree passively; comply; consent |
| acquisitive | eager to piossess and collect things |
| acquit | to find someone not guilty of a crime |
| acrid | harsh; acidic |
| acrimonious | bitter; nasty; spiteful |
| acronym | a word create from the initials of other words |
| acuity | sharpness; keenness of perception; deftness |
| acumen | mental keenness or sharpness |
| acute | sharp; shrewd |
| ad lib | to act, speak and perform off the cuff; spontaneously |
| adage | a wise saying or proverb |
| adamant | resolute; stubborn; inflexible |
| adduce | to give as proof |
| adherent | follower of a leader; supporter |
| adjunct | something connected or added in a subordinate position; an assistant |
| admonish | to caution or warn; criticize or scold mildly but firmly |