unbalanced Definition

1. Not in a state of physical balance.

Thesaurus: shaky, unstable, wobbly; Antonym: sound, steady.
2. Lacking mental balance; deranged.

Thesaurus: deranged, crazy, demented, mad, disturbed, psychotic, erratic, eccentric, touched; Antonym: sane.
3. Said eg of a view or judgement: lacking impartiality; biased.
4. bookkeeping.
Not adjusted so as to show balance of debtor and creditor.