| Referee's demand | 20 |
| Referee's grant | 19 |
| Referee's last number | 25 |
| Referee's no-no | 19 |
| Referee's predicament? | 26 |
| Referee's ruling | 20 |
| Referee's signal | 20 |
| Referee's song to losers | 28 |
| Referee, at times | 17 |
| Referee, before a kickoff | 25 |
| Referee, slangily | 17 |
| Refereed | 8 |
| Referees ensure it | 18 |
| Referees throw them | 19 |
| Referees' needs | 19 |
| Referees, slangily | 18 |
| Reference | 9 |
| Reference a Wikipedia article, say | 34 |
| Reference abbr. | 15 |
| Reference aid | 13 |
| Reference bk. | 13 |
| Reference book | 14 |
| Reference book abbr. | 20 |
| Reference book author | 21 |
| Reference book compiler, at times | 33 |
| Reference book feature | 22 |
| Reference book for a writer | 27 |
| Reference book referral words | 29 |
| Reference book, aptly | 21 |
| Reference book, for short | 25 |
| Reference book: Abbr. | 21 |
| Reference books, often | 22 |
| Reference books? | 16 |
| Reference center? | 17 |
| Reference ending | 16 |
| Reference feature | 17 |
| Reference for a novice webpage designer | 39 |
| Reference from the Hawaiian and Greek for "quick education" | 69 |
| Reference help | 14 |
| Reference key on the piano | 26 |
| Reference line on a graph | 25 |
| Reference line, in math | 23 |
| Reference list | 14 |
| Reference list abbr. | 20 |
| Reference mark | 14 |
| Reference marks | 15 |
| Reference material | 18 |
| Reference note | 14 |
| Reference phrase | 16 |
| Reference point | 15 |
| Reference preceder | 18 |
| Reference program launched in 2005 | 34 |
| Reference reference | 19 |
| Reference section | 17 |
| Reference section offering | 26 |
| Reference section staple | 24 |
| Reference sections | 18 |
| Reference shelf staple | 22 |
| Reference shortcut | 18 |
| Reference site for travelers | 28 |
| Reference site founded by Jimmy Wales | 37 |
| Reference symbol | 16 |
| Reference to a long-forgotten acquaintance | 42 |
| Reference to stongman? | 22 |
| Reference vol. | 14 |
| Reference volume | 16 |
| Reference volume from the UK | 28 |
| Reference volume, informally | 28 |
| Reference with a world of information? | 38 |
| Reference with maps | 19 |
| Reference with oversized pages | 30 |
| Reference word | 14 |
| Reference words | 15 |
| Reference work | 14 |
| Reference work for modelists? | 29 |
| Reference work next to Bartlett's, maybe | 44 |
| Reference work of a sort | 24 |
| Reference work, usually | 23 |
| Reference work: Abbr. | 21 |
| Reference works | 15 |
| Reference works on wars? | 24 |
| Reference works: Abbr. | 22 |
| Reference-book feature | 22 |
| Reference-book inclusion | 24 |
| Reference-desk workers | 22 |
| Referenced | 10 |
| Referenced specifically | 23 |
| References | 10 |
| References in a footnote | 24 |
| References with scales | 22 |
| References, often | 17 |
| Referencing | 11 |
| Referendum choice | 17 |
| Referendum option | 17 |
| Referendum options | 18 |
| Referential abbr. | 17 |
| Referential word at sea | 23 |
| Referential words | 17 |
| Referral for further information | 32 |
| Referred | 8 |