noun
disposition; nature; temperament
Refers to a person's innate character or temperament, especially in terms of kindness or good nature. Often used in phrases like 気立てがいい (good-natured).
彼女は気立てが優しい。
She has a gentle disposition.
気立てのいい人と結婚したい。
I want to marry someone with a good nature.
Compound of 気 (ki, 'spirit, mind') and 立て (tate, from 立てる tateru, 'to set up, establish'). The exact historical derivation is uncertain, but it refers to one's established or innate character.