1.  cracked(s = adj.all) chapped, roughened - used of skin roughened as a result of cold or exposure; "chapped lips"

2.  cracked(s = adj.all) alligatored - of paint or varnish; having the appearance of alligator hide;

3.  cracked(s = adj.all) around the bend, balmy, barmy, bats, batty, bonkers, buggy, crackers, daft, dotty, fruity, haywire, kookie, kooky, loco, loony, loopy, nuts, nutty, round the bend, wacky, whacky - informal or slang terms for mentally irregular; "it used to drive my husband balmy"

1.  Coarsely ground or broken; as, cracked wheat. [1913 Webster]

2.  Crack-brained. [1913 Webster]

cracked, adj.
1 having cracks.
2 (predic.) sl. crazy.

Idiom:
cracked wheat wheat that has been crushed into small pieces.

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  stridor, creak, creaking, discord, stridor, roughness, sharpness cacophony, cacoepy, acute note, high note, soprano, treble, tenor, alto, falsetto, penny trumpet, voce di testa, creaking, stridulous, harsh, coarse, hoarse, horrisonous, rough, gruff, grum, sepulchral, hollow, sharp, high, acute, shrill, trumpet-toned, piercing, ear-piercing, high-pitched, high-toned, cracked, discordant, cacophonous.

N  insanity, disordered reason, disordered intellect, diseased mind, unsound mind, abnormal mind, derangement, unsoundness, psychosis, neurosis, cognitive disorder, affective disorder, insanity, lunacy, madness, mania, rabies, furor, mental alienation, aberration, paranoia, schizophrenia, dementation, dementia, demency, phrenitis, phrensy, frenzy, raving, incoherence, wandering, delirium, calenture of the brain, delusion, hallucination, lycanthropy, brain storm, vertigo, dizziness, swimming, sunstroke, coup de soleil, siriasis, fanaticism, infatuation, craze, oddity, eccentricity, twist, monomania (caprice), kleptodipsomania, hypochondriasis, melancholia, depression, clinical depression, severe depression, hysteria, amentia, screw loose, tile loose, slate loose, bee in one's bonnet, rats in the upper story, dotage, insane, mad, lunatic, loony, crazy, crazed, aliene, non compos mentis, not right, cracked, touched, bereft of reason, all possessed, unhinged, unsettled in one's mind, insensate, reasonless, beside oneself, demented, daft, phrenzied, frenzied, frenetic, possessed, possessed with a devil, deranged, maddened, moonstruck, shatterpated, mad-brained, scatter brained, shatter brained, crackbrained, touched, tetched, off one's head, maniacal, delirious, lightheaded, incoherent, rambling, doting, wandering, frantic, raving, stark staring mad, stark raving mad, wild-eyed, berserk, delusional, hallucinatory, corybantic, dithyrambic, rabid, giddy, vertiginous, wild, haggard, mazed, flighty, distracted, distraught, depressed, agitated, hyped up, bewildered, mad as a March hare, mad as a hatter, of unsound mind, touched in one's head, wrong in one's head, not right in one's head, not in one's right mind, not right in one's wits, upper story, out of one's mind, out of one's wits, out of one's skull, far gone, out of one's senses, out of one's wits, not in one's right mind, fanatical, infatuated, odd, eccentric, hypped, hyppish, spaced out, imbecile, silly, like one possessed, the mind having lost its balance, the reason under a cloud, tet exaltee, tet montee, ira furor brevis est, omnes stultos insanire.