unbalanced adj.
1 rather mad
VERBS be, seem | become
ADV. a little, slightly | mentally She became mentally unbalanced after the accident.
2 not fair to all ideas or sides of sth
VERBS be, seem | become
ADV. extremely, seriously, very | completely, wholly The report is completely unbalanced. | slightly, somewhat a somewhat unbalanced account of the events
You can also check other dicts: unbalanced (English, 中文解释 ), wordnet sense, Collins Definition