Puerile
Having a lack of maturity
Sanguine
Optimistic and cheerful in a confident way
Hapless
Deserving of pity, unlucky, unfortunate
Ebullient
Unrestrainedly joyous
Proscribe
Command against
Aesthetic
An appreciation of beauty and good taste
Vindictive
Disposed to seek revenge or intended for revenge
Impute
Credit or attribute to
Hedonist
Motivated by desire for pleasure
Discredit
Not given credit deserved, held in low esteem