| REB | • reb n. (US, historical) Clipping of rebel: a Confederate, especially a Confederate soldier. • reb n. Shortened form of Rebbe. • reb n. An honorific used by traditional Jews, much like sir and mister/Mr. |
| REC | • rec n. (Informal) Abbreviation of recreation. • rec n. (Countable, informal) A recreation ground. • rec n. (Countable, informal) A recommendation or suggestion. |
| RED | • red adj. Having red#Noun as its color. • red adj. (Of hair) Having an orange-brown or orange-blond colour; ginger. • red adj. (Of the skin) With a red hue due to embarrassment or sunburn. |
| REE | • ree n. Alternative form of rei. • ree adj. (Now chiefly dialectal) Wild; fierce; outrageous; overexcited; frenzied; delirious; crazy. • ree adj. (Now chiefly dialectal) Befuddled with liquor; half-drunk; tipsy. |
| REF | • ref n. (Informal) Clipping of referee. • ref n. Abbreviation of reference. • ref n. Abbreviation of refectory. |
| REG | • reg n. (Internet slang) A regular. • reg n. (Informal) A regulation. • reg n. Registrar. |
| REH | • reh n. The Arabic letter ر. • reh n. A saline efflorescence that comes to the surface on the usar plains of northern India, particularly in Uttar Pradesh. • REH n. an accumulation of salts on soil. |
| REI | • rei n. An old Portuguese money of account. • REI n. a former Portuguese coin. |
| REM | • rem n. (Often capitalized) Initialism of rapid eye movement, a sleep state. • rem n. A dose of absorbed radiation equivalent to one roentgen of X-rays or gamma rays. • rem n. (Computing) A remark; a programming language statement used for documentation (in BASIC for example);… |
| REN | • ren n. (Anatomy) A kidney. • ren n. (Egyptian mythology) One’s name, as part of the soul in ancient Egyptian mythology. • REN n. (Telecommunications) Initialism of ringer equivalence number. |
| REO | • Reo prop.n. A surname from Italian. • REO n. Initialism of real estate owned. (property owned by a lender) • REO n. (Maori) language. |
| REP | • rep n. (Informal) Clipping of reputation. • rep n. (Weightlifting, countable) Clipping of repetition. • rep n. (Informal) Clipping of representative. |
| RES | • res n. Plural of re. • res n. (North America, informal) Clipping of reservation. • res n. (Canada, South Africa) Clipping of residence. |
| RET | • ret v. (Transitive) To prepare (Flax, hemp etc.) for further processing by soaking, which facilitates separation… • ret adj. Retired. • Ret. n. (Law) Abbreviation of retirement. |
| REV | • rev v. To increase the speed of a motor, or to operate at a higher speed. • rev n. Revolution (of something spinning). • rev n. Abbreviation of reverend. |
| REW | • rew n. Obsolete or dialectal form of row. • rew v. (Obsolete or dialectal) simple past tense of row. • rew phr. Abbreviation of rewind. |
| REX | • rex n. An animal which has a genetic recessive variation that causes the guard hairs to be very short or fully lacking. • Rex prop.n. (Formal, usually italicized) The reigning king. • Rex prop.n. A male given name from Latin coined in the nineteenth century from Latin rex "king," rarely given today. |
| REZ | • rez n. (US, slang) Clipping of reservation (“tract of land set apart for native people”). • rez n. (Canada, slang) Clipping of reserve. • rez n. (Canada, slang) Clipping of residence; dormitory. |