| Text | Length |
| Is partial to | 13 |
| Is part of, as a committee | 26 |
| Is part of the decision-making process | 38 |
| Is part of the cast of | 22 |
| Is part of a think tank | 23 |
| Is part of a crew | 17 |
| Is parsimonious, with "out" | 37 |
| Is parsimonious | 15 |
| Is painful | 10 |
| Is overwhelmed by | 17 |
| Is overwhelmed | 14 |
| Is overrun | 10 |
| Is overproud | 12 |
| Is overly fond | 14 |
| Is overly attentive | 19 |
| Is overly alarming | 18 |
| Is overjoyed | 12 |
| Is overfond | 11 |
| Is overflowing | 14 |
| Is overcome with grief | 22 |
| Is overcome by emotion, maybe | 29 |
| Is overcome | 11 |
| Is overburdened | 15 |
| Is over-loving | 14 |
| Is over | 7 |
| Is outstanding, in a way | 24 |
| Is outstanding in business? | 27 |
| Is outstanding | 14 |
| Is outscored | 12 |
| Is out, in a way | 16 |
| Is out there | 12 |
| Is out sick | 11 |
| Is out on a limb, maybe | 23 |
| Is out of the pink? | 19 |
| Is out of sorts | 15 |
| Is out of outs | 14 |
| Is out for a while | 18 |
| Is out | 6 |
| Is otiose | 9 |
| Is or was | 9 |
| Is optimistic | 13 |
| Is oppressed by the heat | 24 |
| Is operational | 14 |
| Is only kidding | 15 |
| Is on the verge of | 18 |
| Is on the same page, so to speak | 32 |
| Is on the same page | 19 |
| Is on the run | 13 |
| Is on the hunt | 14 |
| Is on the horizon | 17 |
| Is on the go | 12 |
| Is on the brink | 15 |
| Is on the bottom? | 17 |
| Is on the back of | 17 |
| Is on the A-team | 16 |
| Is on target | 12 |
| Is on Sirius, say | 17 |
| Is on one's knees | 21 |
| Is on ice | 9 |
| Is on hold, say | 15 |
| Is on hold | 10 |
| Is on guard | 11 |
| Is on deck | 10 |
| Is omniscient | 13 |
| Is ominous | 10 |
| Is older than | 13 |
| Is offensive, in a way | 22 |
| Is offended by | 14 |
| Is off the mark | 15 |
| Is off one's feed | 21 |
| Is off guard | 12 |
| Is off base | 11 |
| Is off | 6 |
| Is of ___ (helps) | 17 |
| Is of ___ (aids) | 16 |
| Is of __ (helps) | 16 |
| Is of value, slangily | 21 |
| Is of value, in a colloquialism | 31 |
| Is of value, colloquially | 25 |
| Is of value to | 14 |
| Is of use to | 12 |
| Is of use | 9 |
| Is of the opinion | 17 |
| Is of service | 13 |
| Is of importance | 16 |
| Is of consequence | 17 |
| Is of benefit | 13 |
| Is obviously sullen | 19 |
| Is obviously successful | 23 |
| Is obviously interested | 23 |
| Is obviously happy | 18 |
| Is obviously gullible | 21 |
| Is obviously excited | 20 |
| Is obviously asleep | 19 |
| Is obviously afraid | 19 |
| Is obvious | 10 |
| Is obtrusive | 12 |
| Is obstinate | 12 |
| Is obliged to | 13 |
| Is obliged for | 14 |
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