WordNet sense 1 ((used of living things especially persons) in an early period of life or development or growth):

immature, young

WordNet sense 2 (slight or limited; especially in degree or intensity or scope):

small

WordNet sense 3 (almost no or (with `a') at least some; very little):

slight

WordNet sense 4 (relating to small (not capitalized) letters that were kept in the lower half of a compositor's type case):

lowercase

WordNet sense 5 ((of sound) relatively low in volume):

soft

WordNet sense 6 (of short duration or distance):

brief

WordNet sense 7 (primarily temporal sense; indicating or being or seeming to be limited in duration):

short

WordNet sense 8 (created or drawn on a small scale):

small-scale

WordNet sense 9 (small enough to be carried in a garment pocket):

pocket-size, pocket-sized

WordNet sense 10 (very small):

miniscule, minuscule

WordNet sense 11 (being on a very small scale):

miniature

WordNet sense 12 (infinitely or immeasurably small):

infinitesimal, minute, minute

WordNet sense 13 (very small):

bantam, diminutive, flyspeck, lilliputian, midget, tiny

WordNet sense 14 ((informal) small and of little importance):

niggling, petty, picayune, piddling, piffling, trivial, fiddling, footling

WordNet sense 15 (not important):

unimportant

WordNet sense 16 (of more than usual emotion):

emotional