| On the --- (precisely) | 22 |
| On the --- (fleeing) | 20 |
| On the -- vive | 14 |
| On the -- of (close to) | 23 |
| On the -- (unfriend-ly) | 23 |
| On the -- (hiding out) | 22 |
| On the -- (fleeing) | 19 |
| On the -- (escaping) | 20 |
| On the -- (discreetly) | 22 |
| On the -- (at variance) | 23 |
| On the -- (at risk of exclusion) | 32 |
| On the "Queen Mary 2", maybe | 38 |
| On the "Index Librorum Prohibitorum" | 46 |
| On that spot | 12 |
| On that account | 15 |
| On terra firma | 14 |
| On terra -- | 11 |
| On tenterhooks | 14 |
| On task | 7 |
| On target | 9 |
| On tap | 6 |
| On t'other side | 19 |
| On Sunset Blvd., say | 20 |
| On sudden impulse | 17 |
| On strike, say | 14 |
| On strike | 9 |
| On stage in the cast | 20 |
| On stage by herself | 19 |
| On SS, perhaps | 14 |
| On SS, maybe | 12 |
| On spring's fringe? | 23 |
| On something? | 13 |
| On something | 12 |
| On some roads, it might be several miles after the last one | 59 |
| On some naval maneuvers, e.g. | 29 |
| On solid ground | 15 |
| On Social Security: Abbr. | 25 |
| On Social Security, typically (abbr.) | 37 |
| On Social Security, say: Abbr. | 30 |
| On Social Sec., say | 19 |
| On Social Sec. | 14 |
| On Soc. Security, say | 21 |
| On Soc. Sec., typically | 23 |
| On Soc. Sec., say | 17 |
| On Soc. Sec., perhaps | 21 |
| On Soc. Sec., often | 19 |
| On Soc. Sec., maybe | 19 |
| On Soc. Sec. | 12 |
| On skid row | 11 |
| On sick leave | 13 |
| On short notice | 15 |
| On ship | 7 |
| On sheltered side | 17 |
| On shank's mare | 19 |
| On shaky ground | 15 |
| On second thought, make it an inspirational film: "The Evil Dead..." | 78 |
| On second thought, make it an edgy comedy: "The Unbearable Lightness of Being..." | 91 |
| On second thought, make it an action flick: "Howards End..." | 70 |
| On second thought, make it a romantic comedy: "Soylent Green..." | 74 |
| On second thought, make it a prison drama: "French Kiss..." | 69 |
| On second thought, make it a musical: "Quiz Show..." | 62 |
| On second thought, make it a horror film: "Big Momma's House..." | 78 |
| On second thought, make it a grim futuristic epic: "Zorro, the Gay Blade..." | 86 |
| On second thought, make it a goofball comedy: "The Good Earth..." | 75 |
| On second thought, make it a gangster film: "Charlie's Angels..." | 79 |
| On second thought, make it a family picture: "Dirty Harry..." | 71 |
| On second thought, make it a costume drama: "Stop Making Sense..." | 76 |
| On Saturn, it's about 10 hours | 34 |
| On sale, say | 12 |
| On sale, or taken off sale | 26 |
| On sale now | 11 |
| On sale | 7 |
| On sabbatical, e.g. | 19 |
| On sabbatical | 13 |
| On reserve | 10 |
| On relief | 9 |
| On rare occasions | 17 |
| On ramp | 7 |
| On Quint's Orca, perhaps | 28 |
| On Poseidon's territory | 27 |
| On poor umpiring: "Macbeth" | 37 |
| On point | 8 |
| On pitch | 8 |
| On pins/needles | 15 |
| On pins and needles | 19 |
| On pension: Abbr. | 17 |
| On pension (Abbr.) | 18 |
| On pension | 10 |
| On pens. | 8 |
| On paper | 8 |
| On our trip, we came to a __ ... | 32 |
| On or ___ | 9 |
| On or after | 11 |
| On or about | 11 |
| On open waters | 14 |
| On oneÂ's own | 21 |
| On one's _____ | 18 |
| On one's ____ | 17 |
| On one's ___ (submissive) | 29 |
| On one's ___ (indigent) | 27 |