The Oxford Thesaurus An A-Z Dictionary of Synonyms - unbalancedadj.

1) uneven, asymmetric(al) , unsymmetric(al) , lopsided, unequal, overbalanced, unstable, wobbly, shaky, unsteady: That stack of chairs is unbalanced and could fall any minute. 2) mad, demented, certifiable, crazy, insane, eccentric, non compos mentis, touched (in the head) , unstable, unhinged, deranged, disturbed, of unsound mind, out of (one's) head, Colloq daffy, dizzy, Chiefly Brit daft, Slang nuts, batty, off (one's) rocker, Chiefly Brit bonkers, US out of one's gourd, loco: The boy is clearly unbalanced, but that doesn't excuse his appalling behaviour.