#499.  Imbecility.  Folly —­ N. want of -intelligence &c. 498, want of —
intellect &c. 450; shadowness[obs3], silliness, foolishness &c. adj.; imbecility, incapacity, vacancy of mind, poverty of intellect, weakness of intellect, clouded perception, poor head, apartments to let; stupidity, stolidity; hebetude[obs3], dull understanding, meanest capacity, shortsightedness; incompetence &c (unskillfulness) 699.
     one’s weak side, not one’s strong point; bias &c 481; infatuation &c.
(insanity) 503.
     simplicity, puerility, babyhood; dotage, anility[obs3], second
childishness, fatuity; idiocy, idiotism[obs3]; driveling.
     folly, frivolity, irrationality, trifling, ineptitude, nugacity[obs3],
inconsistency, lip wisdom, conceit; sophistry &c. 477; giddiness &c (inattention) 458; eccentricity &c. 503; extravagance &c (absurdity) 497; rashness &c. 863.
     act of folly &c. 699.
     b. be — imbecile &c adj.; have no -brains, have no sense &c. 498.
     trifle, drivel, radoter[obs3], dote; ramble &c (madness) 503; play the
fool, play the monkey, monkey around, fool around; take leave of one’s senses (insanity) 503; not see an inch beyond one’s nose; stultify oneself &c. 699; talk nonsense &c. 497. 
     Adj. unintelligent[Applied to persons], unintellectual, unreasoning;
mindless, witless, reasoningless[obs3], brainless; halfbaked; having no head &c. 498; not -bright &c. 498; inapprehensible[obs3].
     weak headed, addle headed, puzzle headed, blunder headed, muddle
headed, muddy headed, pig headed, beetle headed, buffle headed[obs3], chuckle headed, mutton headed, maggoty headed, grossheaded[obs3]; beef headed, fat witted, fat-headed.
     weak-minded, feeble-minded; dull minded, shallow minded, lack-brained;
rattle-brained, rattle headed; half witted, lean witted, short witted, dull witted, blunt-witted, shallow-pated[obs3], clod-pated[obs3], addle-pated[obs3]; dim-sighted, short-sighted; thick-skulled; weak in the upper story.
     shallow, borne, weak, wanting, soft, sappy, spoony; dull, dull as a
beetle; stupid, heavy, insulse[obs3], obtuse, blunt, stolid, doltish; asinine; inapt &c. 699; prosaic &c. 843; hebetudinous[obs3].
     childish, child-like; infantine[obs3], infantile, babyish,
babish[obs3]; puerile, anile; simple &c. (credulous) 486; old-womanish.
     fatuous, idiotic, imbecile, driveling; blatant, babbling; vacant;
sottish; bewildered &c.475.
     blockish[obs3], unteachable Boeotian, Boeotic; bovine; ungifted,
undiscerning[obs3], unenlightened, unwise, unphilosophical[obs3]; apish; simious[obs3].
     foolish, silly, senseless, irrational, insensate, nonsensical, inept;
maudlin.
     narrow-minded &c. 481; bigoted &c. (obstinate) 606; giddy &c.
(thoughtless) 458; rash &c. 863; eccentric &c. (crazed) 503.
     [Applied to actions] foolish, unwise, injudicious, improper,
unreasonable, without reason, ridiculous, absurd,