| A crossword editor has to be very careful when changing one--unlike this puzzle's editor, who was careless four times herein |
| It may come after you |
| Thankless people |
| Not too often |
| Teased mercilessly |
| Needless fuss |
| A mouse may run on one |
| Acquire more items for, as a collection |
| Flower petals, collectively |
| Adrift while aboard, maybe |
| French instructor's directive during elocution lessons |
| Coin collectors' org. |
| Often-affected outburst |
| Silly or mindless |
| A dirty person may draw one |
| Absolutely useless |
| A performer may keep one |
| Moving aimlessly |
| Some Dadaist collectibles |
| Bumps on the back, maybe |
| Apostropheless possessive |
| Artists' studios, often |
| A celebrity may have one |
| Bird that may nest on volcanic ash |
| Careless hurrying |
| Baltimore specialty / Effortless task / Move on all fours with the belly up |
| Collections of works |
| Birds, collectively |
| A missing pencil may be behind one |
| People, collectively |