| ___-mo (instant replay feature) | 31 |
| ___-mo (instant replay technique) | 33 |
| ___-mo (on-field challenge technology) | 38 |
| ___-mo (replay feature) | 23 |
| ___-mo (replay speed) | 21 |
| ___-mo (replay technique) | 25 |
| ___-mo (video effect) | 21 |
| ___-mo action | 13 |
| ___-mo camera | 13 |
| ___-mo instant replay | 21 |
| ___-mo replay | 13 |
| ___-mo special effect | 21 |
| ___-mountain (leopard) | 22 |
| ___-mouth | 9 |
| ___-mouth (snapdragon) | 22 |
| ___-mouthed | 11 |
| ___-mouthed (evasive) | 21 |
| ___-mouthed (insincere) | 23 |
| ___-mouthed (using bad language) | 32 |
| ___-mutton | 10 |
| ___-mutton sleeve | 17 |
| ___-mutton sleeves | 18 |
| ___-mutuel | 10 |
| ___-mutuel (form of betting) | 28 |
| ___-mutuel betting | 18 |
| ___-my-thumb | 12 |
| ___-Na-Na | 9 |
| ___-naïf (disingenuous) | 26 |
| ___-naikai, Japan's Inland Sea | 34 |
| ___-Napoca, Romania | 19 |
| ___-Nazi | 8 |
| ___-neck | 8 |
| ___-neck (horse defect) | 23 |
| ___-neck sweater | 16 |
| ___-necked | 10 |
| ___-Neisse Line | 15 |
| ___-Neisse Line (border in Europe) | 34 |
| ___-nest (delusion) | 19 |
| ___-nest (hoax) | 15 |
| ___-Neuve (province bordering Québec) | 40 |
| ___-nez | 7 |
| ___-nez (type of eyeglasses) | 28 |
| ___-nez glasses | 15 |
| ___-Niacin (controlled release dietary supplement) | 50 |
| ___-night (unscrupulous) | 24 |
| ___-night doubleheader | 22 |
| ___-night stand | 15 |
| ___-nighter | 11 |
| ___-nighter (baseball event) | 28 |
| ___-nine (substance in "Cat's Cradle") | 52 |
| ___-nine-tails | 14 |
| ___-no | 6 |
| ___-nod (drowse) | 16 |
| ___-nod (grow drowsy) | 21 |
| ___-nod (show drowsiness) | 25 |
| ___-noir ("Memento" genre) | 36 |
| ___-noir (modern film genre) | 28 |
| ___-noire (bugbear) | 19 |
| ___-Nord (region of Quebec) | 27 |
| ___-Nord, French dept. | 22 |
| ___-normal granary | 18 |
| ___-nosed kid | 13 |
| ___-nosed pistol | 16 |
| ___-nothing | 11 |
| ___-nothing (ignoramus) | 23 |
| ___-nothing (risking everything) | 32 |
| ___-nothing effort | 18 |
| ___-Nothing party | 17 |
| ___-Nothingism | 14 |
| ___-Novo (Benin's capital) | 30 |
| ___-Novo (capital of Benin) | 27 |
| ___-null (math figure) | 22 |
| ___-null (number of positive integers) | 38 |
| ___-O | 5 |
| ___-O ("Old MacDonald" refrain) | 41 |
| ___-o'-shanter | 18 |
| ___-o'shanter | 17 |
| ___-O-Fish (McDonald's sandwich) | 36 |
| ___-O-Matic (baseball game company) | 35 |
| ___-O-Matic (maker of sports games) | 35 |
| ___-O-Matic Baseball | 20 |
| ___-Obama Proliferation and Threat Reduction Initiative (2007 law) | 66 |
| ___-of album | 12 |
| ___-of-living increase | 22 |
| ___-of-mouth | 12 |
| ___-of-the-moment | 17 |
| ___-of-the-pants | 16 |
| ___-of-the-road | 15 |
| ___-Off (brand of windshield cover) | 35 |
| ___-off (shortened) | 19 |
| ___-Off (windshield cover brand) | 32 |
| ___-Off (windshield cover) | 26 |
| ___-off coupon | 14 |
| ___-off shotgun | 15 |
| ___-Ola, Soviet range | 21 |
| ___-old | 7 |
| ___-on (activities) | 19 |
| ___-on (happenings) | 19 |
| ___-on favorite | 15 |
| ___-on-Avon | 11 |