Fit1  —adj. (fitter, fittest) 1 a well suited. B qualified, competent, worthy. C in suitable condition, ready. D (foll. By for) good enough (fit for a king). 2 in good health or condition. 3 proper, becoming, right (it is fit that). —v. (-tt-) 1 a (also absol.) Be of the right shape and size for (dress fits her; key doesn't fit). B (often foll. By in, into) be correctly positioned (that bit fits here). C find room for (fit another on here). 2 make suitable or competent; adapt (fitted for battle). 3 (usu. Foll. By with) supply. 4 fix in place (fit a lock on the door). 5 = fit on. 6 befit, become (it fits the occasion). —n. Way in which a garment, component, etc., fits (tight fit). —adv. (foll. By to + infin.) Colloq. So that; likely (laughing fit to bust).  fit the bill = fill the bill. Fit in 1 (often foll. By with) be compatible; accommodate (tried to fit in with their plans). 2 find space or time for (dentist fitted me in). Fit on try on (a garment). Fit out (or up) (often foll. By with) equip. See (or think) fit (often foll. By to + infin.) Decide or choose (a specified action).  fitly adv. Fitness n. [origin unknown]