| Main Entry: | childish |
| Part of Speech: | adjective |
| Definition: | immature, silly |
Synonyms: |
adolescent, baby, babyish, callow, childlike, foolish, frivolous, green, infantile, infantine, innocent, jejune, juvenile, kid stuff, naive, puerile, unsophisticated, young, youthful |
| Notes: | childlike refers to a person's temperament, whereas childish refers to a person's behavior |
Antonyms: |
adult, mature, sensible, serious, wise |
| Main Entry: | babyish |
| Part of Speech: | adjective |
| Definition: | acting like an infant |
Synonyms: |
baby, childish, foolish, immature, infantile, juvenile, kid stuff, puerile, silly, sissy, sissyish, spoiled |
Antonyms: |
grown-up, mature |
| Main Entry: | childlike |
| Part of Speech: | adjective |
| Definition: | innocent, naive |
Synonyms: |
artless, childish, credulous, guileless, immature, ingenuous, natural, simple, spontaneous, trustful, trusting, unaffected, unfeigned |
| Notes: | childlike refers to a person's temperament, whereas childish refers to a person's behavior |
Antonyms: |
complicated, untrusting |
| Main Entry: | frivolous |
| Part of Speech: | adjective |
| Definition: | trivial, silly |
Synonyms: |
barmy, childish, dizzy*, empty-headed, facetious, featherbrained, flighty, flip, flippant, foolish, gay, giddy*, harebrained, idiotic, idle, ill-considered, impractical, juvenile, light, light-minded, minor, niggling, nonserious, not serious, paltry, peripheral, petty, playful, pointless, puerile, scatterbrained, senseless, shallow, sportive, superficial, tongue-in-cheek, unimportant, unprofound, volatile, whimsical |
Antonyms: |
grave, mature, sensible, serious, solemn, thoughtful, wise |
| Main Entry: | immature |
| Part of Speech: | adjective |
| Definition: | young, inexperienced |
Synonyms: |
adolescent, baby, babyish, callow, childish, crude, green*, half-grown, imperfect, infantile, infantine, jejune, juvenile, kid, kidstuff, premature, puerile, raw, sophomoric, tender*, tenderfoot, underdeveloped, undergrown, undeveloped, unfinished, unfledged, unformed, unripe, unseasonable, unseasoned, unsophisticated, untimely, wet behind ears, youthful |
Antonyms: |
adult, developed, experienced, grown, mature, old |
| Main Entry: | infant/infantile |
| Part of Speech: | adjective |
| Definition: | very young |
Synonyms: |
baby, babyish, callow, childish, childlike, dawning, developing, early, emergent, green*, growing, immature, infantine, initial, juvenile, kid, naive, nascent, newborn, puerile, tender, unfledged, unripe, weak, youthful |
Antonyms: |
adult, grown-up, mature |
| Main Entry: | kittenish |
| Part of Speech: | adjective |
| Definition: | frisky, playful |
Synonyms: |
childish, coquettish, coy, elvish, flirtatious, frolicsome, fun-loving, impish, jaunty, mischievous, sportive |
Antonyms: |
lethargic, stiff, unplayful |
| Main Entry: | peevish |
| Part of Speech: | adjective |
| Definition: | irritable, testy |
Synonyms: |
acrimonious, angry, bad-tempered, cantankerous, captious, carping, caviling, childish, churlish, complaining, crabbed, cranky, critical, cross, crotchety, crusty, cussed, fault-finding, fractious, fretful, fretting, grouchy, grousing, growling, grumpy, huffy, ill-natured, mean, morose, obstinate, ogre, ornery, out-of-sorts, pertinacious, petulant, querulous, short-tempered, snappy, splenetic, sulky, sullen, surly, tetchy, touchy, ugly, waspish, waspy, whining |
Antonyms: |
accepting, friendly, happy, pleasant |
| Main Entry: | silly |
| Part of Speech: | adjective |
| Definition: | absurd, giddy, foolish |
Synonyms: |
asinine, balmy, brainless, childish, crazy, dippy, dizzy*, empty, empty-headed, fatuous, featherbrained, flighty, foolhardy, frivolous, harebrained, idiotic, ignorant, illogical, immature, imprudent, inane, inappropriate, inconsistent, irrational, irresponsible, ludicrous, meaningless, muddle-headed, nitwitted, nonsensical, pointless, preposterous, puerile, ridiculous, senseless, sheepheaded, simple, simpleminded, stupid, unintelligent, unreasonable, unwise, vacuous, witless |
Antonyms: |
mature, mundane, practical, sensible, serious, wise |
| Main Entry: | simple |
| Part of Speech: | adjective |
| Definition: | childlike, innocent |
Synonyms: |
amateur, artless, bald, basic, childish, direct, frank, green, guileless, honest, ingenuous, naive, naked, natural, plain, sincere, square, stark, trusting, unaffected, unartificial, undeniable, unexperienced, unpretentious, unschooled, unsophisticated, unstudied, unvarnished |
Antonyms: |
mature, older, sophisticated |