Size adjectives are listed in this post. Each word below can often be found in front of the noun size in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing SIZE.
abnormal, above, absolute, acceptable, actual, additional, adequate, adult, aggregate, alarming, allowable, amazing, ample, angular, aperture, apparent, appreciable, appropriate, approximate, arbitrary, astonishing, atomic, available, average, basic, best, better, big, bigger, bite, body, brain, broad, brush, cardiac, cell, certain, characteristic, colossal, comfortable, commercial, common, compact, comparable, comparative, conceivable, considerable, consistent, constant, convenient, correct, corresponding, critical, crystal, crystallite, current
decent, defined, definite, desirable, desired, different, diminished, diminutive, disproportionate, document, double, droplet, e, economic, effect, effective, efficient, enlarged, enormous, enough, entire, equal, equivalent, even, exact, exaggerated, exceptional, excessive, extra, extraordinary, extreme, fabulous, fair, family, fetal, file, final, fine, finished, finite, firm, first, fixed, font, former, formidable, full, future, gargantuan, general, generous, geographic, geographical, giant, gigantic, gold
good, goodly, grain, great, greater, greatest, half, handy, heroic, household, huge, human, ideal, identical, image, imaginable, immense, impressive, inadequate, inch, inconsiderable, inconvenient, incredible, individual, inferior, infinite, infinitesimal, initial, insignificant, insufficient, int, intended, intermediate, interval, irregular, key, laige, large, larger, largest, largo, latter, least, legal, less, lesser, like, likely, limited, linear, little, lot, lower, m, magnificent, majestic
mammoth, manageable, marketable, massive, mature, maximal, maximum, mean, median, medium, mere, mesh, microscopic, middle, middling, mighty, miniature, minimal, minimum, minuscule, minute, moderate, modest, molecular, monstrous, monumental, more, much, muscle, narrow, natural, necessary, new, next, nice, noble, nominal, normal, nuclear, numerical, octavo, odd, old, olympic, only, optimal, optimum, ordinary, organ, organizational, original, other, overall, overwhelming, own, particle
particular, patient, pea, penis, perfect, petite, physical, pigmy, plus, point, ponderous, popular, pore, portable, portentous, possible, potential, practical, precise, predetermined, preferred, prescribed, present, previous, probable, prodigious, proper, proportional, proportionate, prostate, pupil, pupillary, quarter, quarto, real, reasonable, reduced, regular, relative, remarkable, required, requisite, respectable, respective, right, same, sample, screen, second, sheer, significant, similar, single, small, smaller, smallest
special, specific, standard, stupendous, substantial, such, sufficient, suitable, superhuman, superior, surprising, territorial, testicular, text, third, tiny, tolerable, total, tremendous, true, tumor, twin, typical, ultimate, uncommon, unequal, uniform, unique, unknown, unlimited, unnatural, unprecedented, unusual, unwieldy, upper, useful, usual, uterine, variable, varied, various, vast, vertical, very, visible, whole, wide, wonderful, wondrous, wrong
Hope this word list had the adjective used with size you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.