immaturity(n = noun.state) immatureness - not having reached maturity;
is a kind of state
has particulars: greenness, callowness, jejuneness, juvenility, prematureness, prematurity, adolescence, childhood, puerility, babyhood, infancy
Antonym: maturity
Derived forms adjective immature₄, adjective immature₁, adjective immature₃

   The state or quality of being immature or not fully developed; unripeness; incompleteness. [1913 Webster]
"When the world has outgrown its intellectual immaturity." [1913 Webster]

N  imperfection, imperfectness, deficiency, inadequacy, peccancy, immaturity, fault, defect, weak point, screw loose, flaw, gap, twist, taint, attainder, bar sinister, hole in one's coat, blemish, weakness, half blood, shortcoming, drawback, seamy side, mediocrity, no great shakes, no great catch, not much to boast of, one-horse shay, imperfect, not perfect, deficient, defective, faulty, unsound, tainted, out of order, out of tune, cracked, leaky, sprung, warped, lame, injured, peccant, frail, inadequate, crude, incomplete, found wanting, below par, short-handed, below its full strength, under its full strength, below its full complement, indifferent, middling, ordinary, mediocre, average, so-so, coucicouci, milk and water, tolerable, fair, passable, pretty well, pretty good, rather good, moderately good, good, good enough, well enough, adequate, decent, not bad, not amiss, inobjectionable, unobjectionable, admissible, bearable, only better than nothing, secondary, inferior, second-rate, second-best, one-horse, almost, to a limited extent, rather, pretty, moderately, passing, only, considering, all things considered, enough, surgit amari aliquid.

N  incompleteness, deficiency, short measure, shortcoming, insufficiency, imperfection, immaturity, half measures, defect, deficit, defalcation, omission, caret, shortage, interval, break, noncompletion, missing link, missing piece, missing part, gap, hole, lacuna, incomplete, imperfect, unfinished, uncompleted &c (complete), defective, deficient, wanting, lacking, failing, in default, in arrear, short of, hollow, meager, lame, halfand-half, perfunctory, sketchy, crude, mutilated, garbled, docked, lopped, truncated, in progress, in hand, going on, proceeding, incompletely, by halves, caetera desunt, caret.

N  nonpreparation, non-preparation, absence of preparation, want of preparation, inculture, inconcoction, improvidence, immaturity, crudity, rawness, abortion, disqualification, nature, state of nature, virgin soil, unweeded garden, neglect, rough copy, germ, raw material, improvisation, unprepared (prepare), without preparation, incomplete, rudimental, embryonic, abortive, immature, unripe, kachcha, raw, green, crude, coarse, rough cast, rough hewn, in the rough, unhewn, unformed, unfashioned, unwrought, unlabored, unblown, uncooked, unboiled, unconcocted, unpolished, unhatched, unfledged, unnurtured, unlicked, untaught, uneducated, uncultivated, untrained, untutored, undrilled, unexercised, deckle- edged, precocious, premature, undigested, indigested, unmellowed, unseasoned, unleavened, unrehearsed, unscripted, extemporaneous, improvised, spontaneous, ad lib, ad libitem, fallow, unsown, untilled, natural, in a state of nature, undressed, in dishabille, en deshabille, unqualified, disqualified, unfitted, ill-digested, unbegun, unready, unarranged, unorganized, unfurnished, unprovided, unequipped, untrimmed, out of gear, out of order, dismantled, shiftless, improvident, unthrifty, thriftless, thoughtless, unguarded, happy-go- lucky, caught napping, unpremeditated, extempore.

N  newness, novelty, recency, immaturity, youth, gloss of novelty, innovation, renovation, modernism, mushroom, parvenu, latest fashion, new, novel, recent, fresh, green, young, evergreen, raw, immature, unsettled, yeasty, virgin, untried, unhandseled, untrodden, untrod, unbeaten, fire-new, span-new, late, modern, neoteric, hypermodern, nouveau, new-born, nascent, neonatal, new-fashioned, new-fangled, new-fledged, of yesterday, just out, brand-new, up to date, up to the minute, with it, fashionable, in fashion, in, hip, vernal, renovated, sempervirent, sempervirid, fresh as a rose, fresh as a daisy, fresh as paint, spick and span, newly, afresh, anew, lately, just now, only yesterday, the other day, latterly, of late, not long ago, a short time ago, di novello tutto par bello, nullum est jam dictum quod non dictum est prius, una scopa nuova spazza bene.