| Under twenty-one | 16 |
| Under warranty: Abbr. | 21 |
| Under water? | 12 |
| Under way | 9 |
| Under way, as a game | 20 |
| Under way, as racehorses | 24 |
| Under way, to Sherlock | 22 |
| Under way, to Sherlock Holmes | 29 |
| Under what circumstances | 24 |
| Under wraps | 11 |
| Under wraps, so to speak | 24 |
| Under [like contemporary crosswords? Become an AVXWORDS.com subscriber today] | 77 |
| Under __ | 8 |
| Under ___ (afoot) | 17 |
| Under ___ (concealed) | 21 |
| Under ___ (perdu) | 17 |
| Under ___ (Pledge of Allegiance phrase) | 39 |
| Under ___ (securely shut in) | 28 |
| Under ___ colors | 16 |
| Under, at the hospital | 22 |
| Under, bard style | 17 |
| Under, hypnotically | 19 |
| Under, in a way | 15 |
| Under, in Italian | 17 |
| Under, in poems | 15 |
| Under, in poesy | 15 |
| Under, in poetry | 16 |
| Under, in the O.R. | 18 |
| Under, in the OR | 16 |
| Under, in Umbria | 16 |
| Under, in verse | 15 |
| Under, poetic | 13 |
| Under, poetically | 17 |
| Under, to a poet | 17 |
| Under, to a poet | 16 |
| Under, to bards | 15 |
| Under, to Bryant | 16 |
| Under, to Byron | 15 |
| Under, to Frost | 15 |
| Under, to Keats | 15 |
| Under, to poets | 15 |
| Under, to seamen | 16 |
| Under, to Umberto | 17 |
| Under-21 request, sometimes | 27 |
| Under-body problem | 18 |
| Under-cover duds? | 17 |
| Under-cutter? | 13 |
| Under-eave buzzers | 18 |
| Under-eye woes | 14 |
| Under-mine | 10 |
| Under-one's-breath sound | 28 |
| Under-the-abdomen area | 22 |
| Under-the-bed clump | 19 |
| Under-the-bed hider | 19 |
| Under-the-bridge folklore villain | 33 |
| Under-the-chin helmet securer | 29 |
| Under-the-counter ne'er-do-wells? | 37 |
| Under-the-cushions find | 23 |
| Under-the-gun situations | 24 |
| Under-the-gun spot | 18 |
| Under-the-hood cleaner | 22 |
| Under-the-hood knock source, perhaps | 36 |
| Under-the-sink brand | 20 |
| Under-the-sink cleaners | 23 |
| Under-the-sink installation | 27 |
| Under-the-sink item | 19 |
| Under-the-sink items | 20 |
| Under-the-sink joints | 21 |
| Under-the-sink scourers | 23 |
| Under-the-table | 15 |
| Under-the-table action | 22 |
| Under-the-table activity | 24 |
| Under-the-table deal | 20 |
| Under-the-table diversion | 25 |
| Under-the-table flirtation | 26 |
| Under-the-table item | 20 |
| Under-the-table money | 21 |
| Under-the-table payment | 23 |
| Under-the-table payments | 24 |
| Under-the-table promotion | 25 |
| Under-the-table term | 20 |
| Under-the-table things | 22 |
| Under-the-tree items | 20 |
| Under-the-weather-looking | 25 |
| Under-the-window performance | 28 |
| Under-the-window routine | 24 |
| Under-the-wire | 14 |
| Under-water detection aid | 25 |
| Under: Prefix | 13 |
| Underachiever's motto? | 26 |
| Underachievers are not up to it | 31 |
| Underage | 8 |
| Underage child of a military officer? | 37 |
| Underage drinker in Lincoln? | 28 |
| Underage drinker's item | 27 |
| Underage one | 12 |
| Underage person | 15 |
| Underage temptation, slangily | 29 |
| Underaged digger? | 17 |
| Underappreciated laborer | 24 |