rei

As a proper noun reb is

shortened form of rebecca.

As a noun rai is

a member of an ancient indigenous ethnolinguistic group of nepal.

As an abbreviation ref

is reference.

As a noun ref

is short form of referee.

As a verb ref

is (informal) to referee; to act as a referee in a sport or game.

As nouns the difference between rei and reg

is that rei is an old Portuguese money of account while reg is a hard surface of rock fragments set in a sandy matrix, found in some hot deserts; regolith, stony desert.

As a proper noun Reg is

a diminutive of the male given name Reginald.

As an interjection rehi is

(slang) hello again.

As a preposition rel is

(mathematics) relative to.

As a noun reif is

ring or reif can be hoar frost (cover of minute ice crystals on a surface ).

As a proper noun rev is

.

As a noun rec is

(informal).

As a verb rec is

(informal) to recommend something such as a book, movie, product etc.

As a verb ren

is to groan, moan.