Từ đồng nghĩa của lacking substance

frothy frivolous light trivial empty petty slight insubstantial lightweight shallow superficial trifling birdbrained ditsy ditzy dizzy featherbrained flighty futile giddy goofy harebrained insignificant lightheaded light-headed light-minded paltry puerile scatterbrained silly unnecessary vain yeasty frilly unsubstantial worthless inconsequential lighthearted of no account of no merit of no value foolish empty-headed inane dippy flippant thoughtless dopey dotty nutty feather-brained stupid scatty skittish whimsical flimsy batty dappy bird-brained vacuous irresponsible brainless fickle capricious asinine careless forgetful juvenile idiotic crazy childish simple rattlebrained meaningless fatuous gaga bubbleheaded impractical infantile hare-brained inconstant ridiculous immature childlike heedless heady unstable changeable pointless excitable reckless dingbat airheaded dingdong impulsive insouciant impetuous carefree unimportant excited bemused wild light-hearted facetious undemanding zany merry unintellectual flip idle non-serious negligible immaterial minor ill-considered vapid pea-brained wacky daffy nickel-and-dime valueless nonserious lacking seriousness kooky weird flakey screwy flaky failing incompetent featherweight imponderous perky lacking in sense playful barmy unprofound tongue-in-cheek gay volatile simplistic glib of no consequence unsystematic dreamy disorganized schematic not serious madcap feather-headed inattentive wool-gathering slaphappy erratic absent-minded facile ignorant surface hollow oversimplified uncritical sketchy cursory vague irrational woolly-headed unreliable illogical unscholarly unthinking farcical piddling unintelligent disorganised wishy-washy half-baked skin-deep one-dimensional not thinking clearly with a mind like a sieve not with it daft witless senseless lunkheaded dumb half-witted weak-minded mindless doltish crackpot thickheaded eccentric absurd sappy imbecilic nonsensical dim gormless simpleminded balmy thick dim-witted mad insane moronic unwise loony cuckoo dunderheaded loopy lunatic odd kookie looney whacky screwball featherheaded tomfool dull inept slow-witted obtuse peculiar preposterous boneheaded lamebrained cretinous pinheaded halfwitted chuckleheaded soft damfool dozy jerky brain-dead cockeyed unconventional fool glaikit dof dotish thick-witted dense slow ludicrous queer unsmart oafish strange lamebrain bonehead opaque bizarre imbecile dorky softheaded knuckleheaded wacko divvy dopy chowderheaded wooden-headed off the air nuts cockamamie braindead cracked addle-brained simple-minded potty unreasonable blockheaded muttonheaded off the wall not the full shilling haywire funny foolhardy quirky outlandish risible doolally clownish imprudent bonkers laughable cranky amusing oddball comic demented unhinged deranged unbalanced off-centre crazed fantastic psychotic mental certifiable crackers loco kinky idiosyncratic bats meshuga dull-witted gonzo out there vacant feebleminded out to lunch way out dead from the neck up non compos mentis up the pole slow on the uptake as daft as a brush fat-headed soft in the head dipsy airbrained half-cracked birdy purposeless feeble-minded nerdish comical rash unrealistic avant-garde illiterate unworkable ill-conceived nitwitted uneducated unschooled untaught hilarious waggish chucklesome diverting impracticable inconsistent lethargic hebetudinous torpid heavy slumberish comatose sluggish insipid crass weak flat innocuous grotesque incongruous sheepheaded dilly cock-eyed pie-faced muddle-headed joshing humorous camp witty campy know-nothing pea-brain devoid of intelligence off your head off your trolley in left field donkeyish obstinate offbeat way-out surreal far-out off-the-wall freaky unusual unpredictable freakish unorthodox Bohemian far out brainsick outré maniac wud maniacal unsound bedlam meshugge bughouse crackbrained slang fruity rum remarkable funky spaced-out queerish moonstruck quaint off-kilter weirdo out-of-the-way whacko curious psycho bizarro looney tunes loony tunes naive acting crazy dimwitted gullible unreasoning blockish loggerheaded bovine clottish cloddish wooden deficient not intelligent very stupid mentally deficient as thick as two short planks thick as two short planks mentally handicapped thick-headed pig-ignorant thick-skulled dunce-like touched disturbed frenzied distraught psychopathic distracted sectionable raving bananas delirious frantic manic barking hysterical nutso buggy squirrelly nutsy schizoid bushed porangi yarra twisted mentally ill of unsound mind not right upstairs nutty as a fruitcake not quite right in the head not all there have kangaroos in the top paddock mad as a hatter away with the fairies have bats in the belfry round the bend foaming at the mouth out of one's head mentally unbalanced stark mad raving mad not together stark staring mad mad as a March hare round the twist barking mad have a screw loose not right in the head stark raving mad sick in the head

unsubstantial tenuous illogical unsound controvertible erroneous fallacious frivolous groundless implausible inconceivable incredible unconvincing unsupported baseless false superficial unbelievable unreasonable weak feeble flimsy inane unbacked ungrounded wishful assailable contemptible unpersuasive weakly ill-founded full of holes poor inadequate trivial unsatisfactory transparent trifling insufficient pathetic paltry shallow puerile inept lame

lacking subtlety lacking success lacking the ability to lacking the experience to lacking trust lacking value lacking social skills lacking sincerity lacking seriousness lacking sentiment lacking sensation lacking self-restraint