With the. A person who or thing which has been touched (literally or figuratively); such people or things considered collectively (chiefly with plural…

a person three-quarters ‘cracked’: cf. quarter cleft, n. 2.

A ‘half-cracked’ person, one who is foolish or crazy. Now Irish English (northern).

A person displaying erratic, eccentric, or somewhat paranoid behaviour.

attributive, esp. in the senses (a) of or pertaining to the ‘land’ between this world and the next; (b) = borderline, n. 2.

attributive or as adj. Occupying a borderline; esp. in borderline case; spec. (a) verging on the indecent or obscene; (b) verging on insanity.

An eccentric or mentally unbalanced person; a crank, a lunatic. Cf. wacko, n.

= wackadoo, n.