Englishundersized
adjective
a skinny, undersized 15-year-old:
underdeveloped, stunted, small, short, little, tiny, petite, small-boned, slight, compact, minuscule, miniature, mini, diminutive, dwarfish, elfin, bantam, runtish, puny;
Scottish wee;
informal pint-sized, half-pint, pocket-sized, knee-high to a grasshopper, baby, teeny, teeny-weeny, teensy-weensy, itsy-bitsy;
rare homuncular, Lilliputian.
▷antonyms enormous, overgrown.