| Answer | Crossword Clue |
|---|---|
| aperiodic | Not periodic; irregular |
| aperiodic | not periodic |
| acyclic | not periodic |
| aperiodically | APERIODIC, not periodic |
| quasiperiodic | almost but not quite periodic |
| NORMAL | Not irregular |
| STD | Not irregular: Abbr. |
| informal | irregular; not official |
| uneven | irregular; varying; not uniform |
| square | not in agreement; incorrect; irregular |
| difform | different or irregular in form; not uniform |
| intermittent | Occurring at irregular intervals; not continuous or steady |
| irregulars | IRREGULAR, a soldier not formally attached to a military body |
| skewbald | (of an animal) With irregular patches of white and another color (properly not black) |
