| "On my honor" | 23 |
| "On my honor!" | 24 |
| "On me" | 17 |
| "On life's vast ___ . . . ": Pope | 47 |
| "On Liberty" author | 29 |
| "On Language" columnist Zimmer | 40 |
| "On Language" columnist | 33 |
| "On How Life Is" soul singer Gray | 43 |
| "On How Life Is" Gray | 31 |
| "On His Blindness" poet | 33 |
| "On Her Majesty's Secret Service" setting | 55 |
| "On Golden ___" (Henry Fonda film) | 44 |
| "On Golden ___" | 25 |
| "On Golden __" | 24 |
| "On Golden Pond" wife | 31 |
| "On Golden Pond" playwright Thompson | 46 |
| "On Golden Pond" Oscar winner | 39 |
| "On Golden Pond" co-star | 34 |
| "On Golden Pond" birds | 32 |
| "On Golden Pond" bird | 31 |
| "On Golden Pond" actor | 32 |
| "On First Looking Into Chapman's Homer" poet | 58 |
| "On Eagles' Wings" author Weizman | 47 |
| "On Deadly Ground" star Steven | 40 |
| "On Chesil Beach" novelist Ian | 40 |
| "On Chesil Beach" author McEwan | 41 |
| "On call" device | 26 |
| "On Broadway" George | 30 |
| "On Broadway" co-writer Cynthia | 41 |
| "On Boxing" essayist | 30 |
| "On Boxing" author | 28 |
| "On Beyond Zebra" author | 34 |
| "On Beyond Zebra!" boy Conrad Cornelius o'Donald ___ | 66 |
| "On Being Human" writer | 33 |
| "On Baile's ___," Yeats play | 42 |
| "On Airs, Waters and Places" author | 45 |
| "On a ___," 1902 song | 31 |
| "On a ___, ..." (phrase that segues to a related story) | 65 |
| "On a ___ Day" | 24 |
| "On a ___ China" | 26 |
| "On a ___ . . . ": Lerner-Lane musical | 48 |
| "On a wing ___ prayer" | 32 |
| "On a St. Patrick's ___ . . . " | 45 |
| "On a similar note," e.g. | 35 |
| "On a similar note" and the like | 42 |
| "On a cloud ___ child": Blake | 39 |
| "On a clear day you ___ . . . " | 41 |
| "On --- mark, get set..." | 35 |
| "On --- Majesty's Secret Service" | 47 |
| "On & On" singer Erykah ___ | 41 |
| "On & On" singer Erykah | 37 |
| "On & On" Grammy winner | 37 |
| "Omoo," to "Typee" | 38 |
| "Omoo" to "Typee": Abbr. | 44 |
| "Omoo" setting | 24 |
| "Omoo" island | 23 |
| "Omnibus" host Cooke | 30 |
| "Omnibus" host | 24 |
| "Omnia vincit ___" (Latin for "Love conquers all") | 70 |
| "Omnia vincit ___" | 28 |
| "Omnia vincit __" | 27 |
| "Omnes viri regis" | 28 |
| "Omigosh" | 19 |
| "Omigosh!" [1938] | 27 |
| "Omigosh!" | 20 |
| "Omigod!" | 19 |
| "OMG," long before IMs | 32 |
| "OMG, yes!!!1" | 24 |
| "OMG, too funny!" | 27 |
| "OMG, that's sooo funny!" | 39 |
| "OMG, that's hilarious" | 37 |
| "OMG, stop with the details already!" | 47 |
| "OMG, stop telling me all this!" | 42 |
| "OMG, skip the sordid details!" | 41 |
| "OMG, my parents are gonna ground me for a million years!" | 68 |
| "OMG!," quaintly | 26 |
| "OMG!," old-style | 27 |
| "OMG!" of yore | 24 |
| "OMG!" ancestor | 25 |
| "OMG!" | 16 |
| "OMG! Too funny!" | 27 |
| "OMG! that Pomeranian is wearing a life vest!" | 56 |
| "OMG! Spare me!" | 26 |
| "OMG! I didn't want to know that!" | 48 |
| "OMG ur so funny!" | 28 |
| "OMG that is funny" | 29 |
| "OMG since 1997" program | 34 |
| "Omertà " author | 28 |
| "Omen ___: The Final Conflict" | 40 |
| "Om," e.g. | 20 |
| "Om ___ padme hum" (Tibetan prayer) | 45 |
| "Om Mani Padme Hum," et al. | 37 |
| "Olympus, the ___ of the gods": Homer | 47 |
| "Olympic track events are thrilling," e.g. | 52 |
| "Olympic athletes are having sex?!?" | 46 |
| "Olympia" painter Edouard | 35 |
| "Olympia" painter Édouard | 43 |
| "Olympia" painter | 27 |
| "Olympia" artist | 26 |
| "Olympia" and others | 30 |