four-square

adj (a) square-shaped 方形的; 方的. (b) solidly based; steady or resolute 不动摇的; 坚定的; 坚决的; 果断的: a ,four-square ap`proach to the problem 对该问题的强硬态度.

found, foundation, foundation course, foundation-stone, foundations, founder, founder-member, founding father, foundling, foundry, fount, fountain, fountain-head, fountain-pen, four, four-, four-in-hand, four-letter word, four-ply, four-poster, four-wheel drive, fourfold, foursome, fourteen, fourteenth, fourth, fowl, fowl pest, fox, fox-hunting, fox-terrier, foxglove, foxhole, foxhound, foxtrot, foxy, foyer, FPA, Fr, fracas,