Synonyms for Four:

adj.

four (adjective)
quadrilateral, square, quartet, quaternary, quarto, quadrangular, quad, rectangular.
having four of something (adjective)
quaternary, tetrad.

n.

eight, eleven, five, crore, cardinal number, fifteen, billion, eighty, eighteen, fifty. duo, brace, pairing, pair, score, quintet, couple. four (noun)
quadrature, Quadrennium, quartet, rectangle, quadrille, quadrangle, quadruplet, foursome, tetrad, quatern, quaternity, iv, cardinal, 4, Little Joe, quaternion, quaternary.
four of something (noun)
quartet, quaternion, quadruplet, quaternity.
rowing (noun)
crew, rower, oarsman, regatta, oarswoman, coxswain, cox, row.

Other synonyms:

IV
iv.
pairing. duo, quintet. pair. couple. brace. score. rowing
crew, rower, oarsman, regatta, oarswoman, coxswain, cox, row.
Other relevant words:
eight, oarswoman, cardinal number, brace, quatern, five, fifteen, 4, quaternity, billion, eighty, regatta, eighteen, quadruplet, pairing, score, rower, row, coxswain, quintet, couple, quaternion, pair, cardinal, crew, Little Joe, iv, oarsman, fifty, duo, tetrad, eleven, cox, crore.

Usage examples for four

  1. I told you to get four – The Pines of Lory by John Ames Mitchell
  2. " Oh, we never get more than four at a time," he told her. – Home Fires in France by Dorothy Canfield