| One barely getting along? | 25 |
| One barely living? | 18 |
| One barely passes with it | 25 |
| One barely riding? | 18 |
| One barely running? | 19 |
| One barred from a bar | 21 |
| One barred from a U.N. no-fly zone | 34 |
| One barred from bars | 20 |
| One batting result | 18 |
| One bear | 8 |
| One bearing down | 16 |
| One bearing down hard | 21 |
| One bearing down? | 17 |
| One bearing presents | 20 |
| One bearing witness | 19 |
| One beaten by a beatnik | 23 |
| One beaten by an ape | 20 |
| One before a tribunal, maybe | 28 |
| One before bi | 13 |
| One before dix | 14 |
| One before four | 15 |
| One before Hump Day: abbr. | 26 |
| One before Judge Judy | 21 |
| One before one | 14 |
| One befuddled by jargon | 23 |
| One beginning a career | 22 |
| One beginning to history? | 25 |
| One beginning? | 14 |
| One begins "By the rivers of Babylon, there we sat down" | 66 |
| One begins "Rhapsody in Blue" | 39 |
| One begins "Shall I compare thee to a summer's day?" | 66 |
| One begins "The king shall joy in thy strength" | 57 |
| One begins "The Lord is my light and my salvation" | 60 |
| One begins parallel parking in it | 33 |
| One behind a window | 19 |
| One behind another | 18 |
| One behind Gladys Knight | 24 |
| One behind home plate, informally | 33 |
| One behind the lens | 19 |
| One behind the other | 20 |
| One behind the times | 20 |
| One behind the wheel | 20 |
| One behind the wheel with a handle | 34 |
| One being brought along | 23 |
| One being carefully tended to | 29 |
| One being counseled | 19 |
| One being counter-productive? | 29 |
| One being decorated | 19 |
| One being examined | 18 |
| One being exploited | 19 |
| One being introduced | 20 |
| One being mentored | 18 |
| One being paid | 14 |
| One being passed in a race | 26 |
| One being presented | 19 |
| One being printed at a station | 30 |
| One being put to sleep? | 23 |
| One being quizzed | 17 |
| One being shepherded, say | 25 |
| One being strung along? | 23 |
| One being taught a lesson | 25 |
| One being unsubtle, perhaps | 27 |
| One being used | 14 |
| One believing that God is indifferent | 37 |
| One belonging to: Suffix | 24 |
| One below a marquess | 20 |
| One below a second lieut. | 25 |
| One below lt. j.g. | 18 |
| One below quattro | 17 |
| One bend too many? | 18 |
| One bending to and fro | 22 |
| One beneath contempt | 20 |
| One benefit of a vacation | 25 |
| One bent while genuflecting | 27 |
| One best avoided | 16 |
| One bestowing a title | 21 |
| One between 12 and 20 | 21 |
| One between second and third | 28 |
| One between the covers, often | 29 |
| One between two cardinals? | 26 |
| One beyond belief | 17 |
| One beyond belief? | 18 |
| One beyond foolish | 18 |
| One beyond help | 15 |
| One beyond hope | 15 |
| One beyond the pale? | 20 |
| One big-time broadcaster | 24 |
| One billed first | 16 |
| One billed higher than the rest | 31 |
| One billion years | 17 |
| One billion years to Hubble | 28 |
| One billion years (Var.) | 24 |
| One billion years, geologically | 31 |
| One billion years, in astronomy | 31 |
| One billion years, in geologic time | 35 |
| One billion years, in geology | 29 |
| One billionth (Pref.) | 21 |
| One billionth: Prefix | 21 |
| One bit | 7 |
| One bit at a time | 17 |