| Threefold: Prefix | 17 |
| Threefold: Comb. form | 21 |
| Threefold | 9 |
| Three: Sp. | 10 |
| Three: Prefix | 13 |
| Three: It. | 10 |
| Three: Ger. | 11 |
| Three: Fr. | 10 |
| Three: Comb. form | 17 |
| Three-_____ (multipurpose) | 26 |
| Three-_____ | 11 |
| Three-___ sloth | 15 |
| Three-___ race | 14 |
| Three-___ circus | 16 |
| Three-___ (triple) | 18 |
| Three-___ (tricycle) | 20 |
| Three-___ (third consecutive championship) | 42 |
| Three-___ (multipurpose) | 24 |
| Three-___ | 9 |
| Three-__: sports portmanteau | 28 |
| Three-__: consecutive sports titles | 35 |
| Three-__ garden fork | 20 |
| Three-__ (sergeant, informally) | 31 |
| Three-__ (fine dining locales) | 30 |
| Three-year-___ (Derby entries) | 30 |
| Three-year-olds, at times | 25 |
| Three-year-olds run here | 24 |
| Three-year-olds run around there | 32 |
| Three-year-olds compete here | 28 |
| Three-year-old, e.g. | 20 |
| Three-year-old's question | 29 |
| Three-year-old stag | 19 |
| Three-year-old salmon | 21 |
| Three-year-old | 14 |
| Three-year terms | 16 |
| Three-word ultimatum | 20 |
| Three-wishes granter | 20 |
| Three-whole-step interval | 25 |
| Three-wheelers, e.g. | 20 |
| Three-wheelers | 14 |
| Three-wheeler, for short | 24 |
| Three-wheeler, e.g. | 19 |
| Three-wheeler | 13 |
| Three-wheeled vehicle | 21 |
| Three-wheeled taxi | 18 |
| Three-wheeled rickshaw | 22 |
| Three-wheeled passenger vehicles | 32 |
| Three-wheeled motor taxis | 25 |
| Three-wheeled Indian taxi | 25 |
| Three-wheeled Asian cab | 23 |
| Three-way: Prefix | 17 |
| Three-way, e.g. | 15 |
| Three-way plumbing joint | 24 |
| Three-way pipe joint | 20 |
| Three-way pipe connector | 24 |
| Three-way pipe connections | 26 |
| Three-way pipe connection | 25 |
| Three-way pipe | 14 |
| Three-way joint | 15 |
| Three-way hardware linkage | 26 |
| Three-way divider | 17 |
| Three-way circuit | 17 |
| Three-way | 9 |
| Three-walled structure | 22 |
| Three-walled court activity | 27 |
| Three-vowel word that's a homophone of a fourth vowel | 57 |
| Three-volume novel of 1815 | 26 |
| Three-trio combo | 16 |
| Three-Tony winner for '91 | 29 |
| Three-toned musical chord | 25 |
| Three-toned chords | 18 |
| Three-tone chord | 16 |
| Three-ton beast | 15 |
| Three-toed wading birds | 23 |
| Three-toed tusker | 17 |
| Three-toed sloths | 17 |
| Three-toed runners | 18 |
| Three-toed ratite | 17 |
| Three-toed critters | 19 |
| Three-toed creatures similar to ostriches | 41 |
| Three-toed creature | 19 |
| Three-toed birds | 16 |
| Three-toed bird of the pampas | 29 |
| Three-toed bird of South America | 32 |
| Three-toed bird | 15 |
| Three-toed Australian | 21 |
| Three-toed animal | 17 |
| Three-to-five-alarm dish | 24 |
| Three-time World Series of Poker winner Ungar | 45 |
| Three-time World Series of Poker champ ___ Ungar | 48 |
| Three-time World Cup winner | 27 |
| Three-time World Cup star | 25 |
| Three-time World Cup skiing champion | 36 |
| Three-time World Cup medalist | 29 |
| Three-time world champion figure skater | 39 |
| Three-time world champion boxer Hector | 38 |
| Three-time world champion alpine skier Hermann | 46 |
| Three-time WNBA MVP __ Leslie | 29 |
| Three-time WNBA MVP | 19 |
| Three-time Winter Olympics medalist | 35 |