four hundred. Associated word: quadrigenarious.
four-sided, a. quadrangular, [square], quadrilateral, tetragonal, tetrahedral.
four-sided figure. [square], tetragon, quadrangle, rhombus.
foursquare, a. quadrangular.
fourth, n. quarter.
four years, quadrennium. Associated words: quadrennial, quadrennially.
fox, n. Reynard, Renard, tod, Charlie. Associated words: vulpine, vulpicide, [skulk].
foxglove, n. digitalis.
foxy, a. [cunning], [sly], [wily], [crafty].
foyer, n. greenroom.