Acquit-
To clear of a charge; find not guilty.
He was acquitted of any charge.
Exhilarated-
Cheerful, merry.
He is in an exhilarated mood today.
Cynical-
Negative feelings towards others; pessimistic.
Feral-
Wild, savage.
He gave her a feral look.
Rueful-
Regretful.
She had a rueful face that day.
Infantile-
Childish.
The teacher does not like his infantile behaviour
Squalor-
Filth.
He lives in a squalor house.
Eccentric-
Odd or unusual.
Dull with no special or interesting qualities.