| A | B |
| apprehend | to arrest, to understand |
| apprehensive | fearful, uneasy |
| apprentice | a person who learns a trade under the supervision of a master worker |
| apprise | to make something known to someone else |
| comprehend | to understand |
| comprise | to include |
| emprise | an undertaking |
| enterprise | an ambitious undertaking |
| entrepreneur | a person who undertakes commercial ventures |
| impregnable | unable to be taken or captured |
| impresario | a person who sponsors elaborate forms of entertainment |
| misapprehension | a misunderstanding |
| prehensile | capable of seizing and holding |
| prison | a place where people convicted of crimes are detained |
| reprehend | to reprove, critize |
| reprenhensible | deserving reproof or criticism |
| reprisal | an act of retaliation |
| surprise | to catch someone suddenly |