| On __ (watching intake) | 23 |
| On __ (trying to reduce) | 24 |
| On __ (trying to lose weight) | 29 |
| On __ (precisely) | 17 |
| On __ (doing well) | 18 |
| On __ (counting calories) | 25 |
| On __ (burning) | 15 |
| On zero occasions | 17 |
| On your ___ | 11 |
| On your toes | 12 |
| On your side | 12 |
| On your own | 11 |
| On your face, it's embarrassing | 35 |
| On Wilshire Blvd., say | 22 |
| On which nelsons occur | 22 |
| On which Juvenal journeyed | 26 |
| On which Joan of Arc perished | 29 |
| On which Irish linens are made | 30 |
| On which dinero doesn't grow | 32 |
| On which Dido died | 18 |
| On which daring people fly | 26 |
| On which Berlin boaters go | 26 |
| On which B's slide | 22 |
| On which an arabesque is performed | 34 |
| On which a riser rises | 22 |
| On which a gofer goes | 21 |
| On wheels | 9 |
| On what the earth turns | 23 |
| On welfare, presumably | 22 |
| On way to remove a paper trail | 30 |
| On watch | 8 |
| On Vine St., say | 16 |
| On view | 7 |
| On videotape, say | 17 |
| On video | 8 |
| On very short notice | 20 |
| On Ventura Blvd., say | 21 |
| On Ventura Blvd., perhaps | 25 |
| On Ventura Blvd., e.g. | 22 |
| On vacation, say | 16 |
| On vacation, perhaps | 20 |
| On vacation, often | 18 |
| On vacation | 11 |
| On twos, rather than fours | 26 |
| On two feet | 11 |
| On TV, say | 10 |
| On TV he had heroes | 19 |
| On TV | 5 |
| On trial | 8 |
| On tranquilizers | 16 |
| On track, mentally | 18 |
| On track to win | 15 |
| On topic | 8 |
| On top, poetically | 18 |
| On top of, to poets | 19 |
| On top of, to bards | 19 |
| On top of, in poetry | 20 |
| On top of things | 16 |
| On top of the world? | 20 |
| On top of the world | 19 |
| On top of that | 14 |
| On top of it | 12 |
| On top of everything else | 25 |
| On top of everything | 20 |
| On top of | 9 |
| On top it can have a whitecap | 29 |
| On top | 6 |
| On too many projects | 20 |
| On toast, in diner slang | 24 |
| On toast, at a diner | 20 |
| On to | 5 |
| On tiptoe ballet position | 25 |
| On time | 7 |
| On this very spot | 17 |
| On this spot | 12 |
| On this side: Prefix | 20 |
| On this side of: Prefix | 23 |
| On this side of the moon | 24 |
| On this planet | 14 |
| On this earth | 13 |
| On thin ice | 11 |
| On the____ | 10 |
| On their way | 12 |
| On the: It. | 11 |
| On the _____ (very angry) | 25 |
| On the _____ (furtively) | 24 |
| On the _____ (declining) | 24 |
| On the _____ | 12 |
| On the ____: free | 17 |
| On the ____: failing | 20 |
| On the ____: close behind | 25 |
| On the ____ (precisely) | 23 |
| On the ____ | 11 |
| On the ___ with | 15 |
| On the ___ wavelength (in accord) | 33 |
| On the ___ vive (watchful) | 26 |
| On the ___ vive (alert) | 23 |
| On the ___ vive | 15 |
| On the ___ one's tongue | 27 |
| On the ___ of (chummy) | 22 |