| On one's ___ (independent) | 30 |
| On one's ___ (destitute) | 28 |
| On one's ___ (broke) | 24 |
| On one's ___ (alert) | 24 |
| On one's ___ | 16 |
| On one's __ (alert) | 23 |
| On one's way out | 20 |
| On one's way | 16 |
| On one's uppers | 19 |
| On one's trolley? | 21 |
| On one's toes | 17 |
| On one's tax return | 23 |
| On one's side | 17 |
| On one's rocker? | 20 |
| On one's rocker, perhaps | 28 |
| On one's rocker | 19 |
| On one's own | 16 |
| On one's mark | 17 |
| On one's last ___ | 21 |
| On one's last legs | 22 |
| On one's keister | 20 |
| On one's guard | 18 |
| On one's game | 17 |
| On one's feet | 17 |
| On one's duff | 17 |
| On one's case | 17 |
| On one's back | 17 |
| On one's --- (independent) | 30 |
| On one side | 11 |
| On one of these pages | 21 |
| On one occasion | 15 |
| On one extreme | 14 |
| On Old Ironsides | 16 |
| On occasion, what Timmy used to call Lassie | 43 |
| On occasion | 11 |
| On notice | 9 |
| On neither side | 15 |
| On naval operations | 19 |
| On naval maneuvers, in a way | 28 |
| On naval maneuvers | 18 |
| On My ____ (We Five hit by our Sylvia Tyson) | 44 |
| On more solid ground | 20 |
| On Mom's side | 17 |
| On meds, say | 12 |
| On Mars, this is 687 days | 25 |
| On line, maybe | 14 |
| On life support, probably | 25 |
| On life support and unresponsive | 32 |
| On liberty, e.g. | 16 |
| On liberty | 10 |
| On leave, maybe | 15 |
| On leave, for a swabbie | 23 |
| On leave | 8 |
| On land ___ | 11 |
| On land | 7 |
| On key | 6 |
| On January 1, we stopped writing it so much | 43 |
| On its way, to oilmen? | 22 |
| On its way, as a message | 24 |
| On its way, as a letter | 23 |
| On its way, as a fax | 20 |
| On its way, after "in" | 32 |
| On its way (or so they say) | 27 |
| On its way | 10 |
| On its playing fields, "Waterloo was won" | 51 |
| On its own | 10 |
| On intimate social terms with | 29 |
| On in years | 11 |
| On in age | 9 |
| On ice, maybe | 13 |
| On ice | 6 |
| On horseback, perhaps | 21 |
| On horseback | 12 |
| On Hollywood Blvd., say | 23 |
| On holiday, say | 15 |
| On holiday | 10 |
| On hold ... or what the seven rows of black squares in this puzzle's grid spell in Morse code | 97 |
| On hold | 7 |
| On Hobbits, they make a point | 29 |
| On high | 7 |
| On hiatus | 9 |
| On hand, as a touring troupe | 28 |
| On hand | 7 |
| On guard | 8 |
| On good terms | 13 |
| On good grounds | 15 |
| On Golden Pond actor | 23 |
| On foot: Fr. | 12 |
| On foot, in Paris | 17 |
| On foot, in Nice | 16 |
| On foot, in France | 18 |
| On floppy disk, say | 19 |
| On first, maybe | 15 |
| On first impression | 19 |
| On fire, so to speak | 20 |
| On fire, in restaurant lingo | 28 |
| On fire, as some desserts | 25 |
| On fire, as a match | 19 |
| On fire, as a building | 22 |
| On fire in the kitchen | 22 |