Synonyms for Out to lunch:

• adj.

  •absent-minded (adjective)
  • engrossed,
  • absent,
  • lost,
  • spacey,
  • unobservant,
  • surroundings,
  • removed,
  • dreaming,
  • scatterbrained,
  • careless,
  • distrait,
  • unthinking,
  • bemused,
  • withdrawn,
  • remote,
  • moony,
  • dreamy,
  • distracted,
  • absorbed,
  • Mooning,
  • daydreaming.
  •abstracted (adjective)
  • Absent-minded.
  •bananas (adjective)
  • off one rocker,
  • sick the head,
  • crazy as loon,
  • sick in head,
  • off ones rocker,
  • sick head.
  •comatose (adjective)
  • insensible,
  • drowsy,
  • lethargic,
  • dopey,
  • vegged out,
  • torpid,
  • stupefied,
  • sleepy,
  • senseless,
  • dead,
  • cold,
  • hebetudinous,
  • slumberous,
  • sluggish.
  •confused (adjective)
  • perplexed,
  • fouled up,
  • at a loss,
  • disconcerted,
  • shook up,
  • mixed-up,
  • addled,
  • not with it,
  • flummoxed,
  • thrown off balance,
  • at sea,
  • unzipped,
  • thrown,
  • nonplussed,
  • taken aback,
  • perturbed,
  • mixed up,
  • come apart,
  • Misled,
  • muddle-headed,
  • Punchy,
  • unglued,
  • glassy-eyed,
  • flustered,
  • muddled,
  • screwy,
  • baffled,
  • at sixes and sevens,
  • unscrewed,
  • befuddled,
  • puzzled,
  • punch-drunk,
  • dazed,
  • shot to pieces,
  • Stumped,
  • abashed,
  • disorganized,
  • slaphappy,
  • bewildered.
  •crazy (adjective)
  • cracked,
  • fruity,
  • erratic,
  • daft,
  • mad as a march hare,
  • maniacal,
  • demented,
  • mad,
  • deranged,
  • out of one's mind,
  • silly,
  • nutty,
  • wacky,
  • insane,
  • berserk,
  • cuckoo,
  • screwball,
  • flipped out,
  • barmy,
  • ape,
  • delirious,
  • freaked out,
  • dippy,
  • lunatic,
  • nuts,
  • crazed,
  • batty,
  • moonstruck.
  •forgetful (adjective)
  • remiss,
  • negligent,
  • unwitting,
  • sloppy,
  • slack.
  •haywire (adjective)
  • out of whack,
  • defective,
  • amok,
  • in pieces,
  • amiss,
  • disordered,
  • in a mess,
  • chaotic,
  • messy,
  • out of order,
  • Orderless,
  • haywire.
  •heedless (adjective)
  • Disregardful,
  • uncaring,
  • foolhardy,
  • precipitate,
  • rash,
  • inconsiderate,
  • incautious,
  • impetuous,
  • unwary,
  • reckless,
  • fast and loose,
  • thoughtless,
  • feckless,
  • slapdash,
  • imprudent,
  • inadvertent.
  •ignorant (adjective)
  • unaware.
  •inattentive (adjective)
  • musing,
  • listless,
  • Inobservant,
  • apathetic,
  • off guard,
  • unnoticing,
  • diverted,
  • regardless,
  • absentminded,
  • Unobserving,
  • distraught,
  • unperceiving,
  • vague,
  • unwatchful,
  • indifferent,
  • undiscerning,
  • blind,
  • rapt,
  • off-guard,
  • bored.
  •incompetent (adjective)
  • in eligible,
  • in competent,
  • un-trained,
  • most unequipped,
  • in-efficient,
  • bushleague,
  • in-eligible,
  • most disqualified,
  • more floundering,
  • un-skilled,
  • un equipped,
  • more unequipped,
  • more unfitted,
  • most floundering,
  • more unadapted,
  • in efficient,
  • dis qualified,
  • un-proficient,
  • most amateur,
  • un trained,
  • most unfitted,
  • un qualified,
  • unhandier,
  • un fitted,
  • un handier,
  • un-fit,
  • in expert,
  • un handiest,
  • un adapted,
  • in effectual,
  • in experienced,
  • un-equipped,
  • un proficient,
  • un initiated,
  • more amateur,
  • un-handier,
  • most unadapted,
  • un skilled,
  • in-competent,
  • in-experienced,
  • un-adapted,
  • un-fitted,
  • un-handy,
  • un-handiest,
  • most unproficient,
  • un-initiated,
  • in-sufficient,
  • more unproficient,
  • in adequate,
  • un-qualified,
  • unhandiest,
  • in-effectual,
  • un handy,
  • in-expert,
  • dis-qualified,
  • in-adequate,
  • more disqualified,
  • in capable,
  • in-capable.
  •insane (adjective)
  • bananas,
  • crackers.
  •mixed-up (adjective)
  • dis-oriented,
  • mixedup,
  • dis oriented.
  •muddle-headed (adjective)
  • more addlepated,
  • most addlepated,
  • muddle headed.
  •oblivious (adjective)
  • more blundering,
  • un acquainted,
  • more unrecognizing,
  • in-conversant,
  • more overlooking,
  • most overlooking,
  • more forgetting,
  • un-recognizing,
  • in cognizant,
  • un familiar,
  • un-instructed,
  • in conversant,
  • most blundering,
  • un-concerned,
  • un-familiar,
  • un instructed,
  • over looking,
  • most inconversant,
  • in-cognizant,
  • more inconversant,
  • most unrecognizing,
  • over-looking,
  • un-acquainted,
  • most forgetting,
  • un concerned,
  • un recognizing.
  •spaced out (adjective)
  • zoned out,
  • in fog.
  •spacey/spacy (adjective)
  • off wall,
  • offcenter,
  • off center,
  • out left field.
  •stupid (adjective)
  • half witted,
  • thick headed,
  • in-sensate,
  • in-discreet,
  • most loser,
  • more loser,
  • in sensate,
  • most thick headed,
  • in discreet,
  • un intelligent,
  • dummier,
  • more thick-headed,
  • dummiest,
  • more thick headed,
  • un-intelligent,
  • most thick-headed,
  • illadvised.
  •thick-witted (adjective)
  • thickwitted,
  • thick witted.
  •unaware (adjective)
  • not cognizant,
  • in daze,
  • un aware,
  • un suspecting,
  • un-enlightened,
  • deaf to,
  • un enlightened,
  • un-suspecting,
  • un-aware,
  • in a daze,
  • caught napping.
  •unbalanced (adjective)
  • un stabler,
  • un-sound,
  • un-soundest,
  • un stablest,
  • un-stablest,
  • un sound,
  • un sounder,
  • un stable,
  • un-stable,
  • un balanced,
  • un-sounder,
  • un-stabler,
  • un-balanced.
  •unhinged (adjective)
  • most maniac,
  • more maniac,
  • un-hinged,
  • un hinged,
  • most manic.
  •uninformed (adjective)
  • un educated,
  • un informed,
  • un schooled,
  • un-educated,
  • un-schooled,
  • in dark,
  • un-briefed,
  • most unbriefed,
  • un-informed,
  • un briefed,
  • more unbriefed.
  •unknowing (adjective)
  • un-knowing,
  • un knowing.

• n.

  •idiot (noun)
  • cretin,
  • nincompoop,
  • dimwit,
  • dunce,
  • kook,
  • ignoramus,
  • ninny,
  • fool,
  • nitwit,
  • pinhead,
  • bonehead,
  • blockhead,
  • dumbbell,
  • twit,
  • imbecile,
  • tomfool,
  • simpleton,
  • jerk.

• Other synonyms:

  •Other relevant words:
  • Luny,
  • unknowing,
  • abnormal,
  • kinky,
  • balmy,
  • bats,
  • meshuga,
  • exceptional,
  • bugs,
  • maddened,
  • paranoiac,
  • Crack-brained,
  • loco,
  • eccentric,
  • mental,
  • schizophrenic,
  • bughouse,
  • touched,
  • doolally,
  • looney,
  • uninformed,
  • twisted,
  • manic,
  • raving,
  • neurotic,
  • Daffy,
  • loopy,
  • psychotic,
  • crackpot,
  • goofy,
  • certifiable,
  • psychopathic,
  • disturbed,
  • off-the-wall,
  • non compos mentis,
  • psychoneurotic,
  • dotty,
  • bonkers,
  • mentally ill,
  • paranoid,
  • gaga,
  • irrational,
  • ill,
  • schizoid.

Antonyms for Out to lunch:

• adj.

  • absent-minded
    attentive, aware, alert.
  • comatose
    conscious, awake.
  • confused
    organized, oriented, clear, understanding.
  • crazy
    sensible, reasonable, responsible, balanced, sane, smart, realistic.
  • forgetful
    remembering, retentive, mindful, recalling.
  • heedless
    observant, cautious, concerned, careful, heedful, thoughtful, caring.
  • inattentive
    Noticing, looking.

• n.

  • idiot
    brain.