alphabetize, analyze, appraise, arrange, assess, assort, bolt, bosom, break down, catalog, categorize, class, codify, collate, conceal, digest, divide, evaluate, factor, file, file and forget, gauge, gradate, grade, group, hold out on, identify, in petto, index, keep, keep back, keep between us, keep buttoned up, keep close, keep dark, keep from, keep in ignorance, keep mum, keep secret, keep snug, keep under wraps, list, make no sign, never let on, not give away, not tell, order, pigeonhole, place, play dumb, range, rank, rate, riddle, screen, secrete, separate, sieve, sift, size, sort, sort out, subdivide, subordinate, tabulate, thrash out, type, veil, weigh, winnow, withhold