disposition

generally being in a state of happiness

having a noticeably happy and positive nature

an inherent quality of mind and character

being kind and pleasant towards others

having a friendly and considerate nature

having a kind, gentle, and pleasing nature

being consistently cheerful and optimistic

having a mild, kind, and calm temperament

having a bright and happy nature

being easily worried or frightened

a natural tendency or quality that is inherited

being unkind, unpleasant, or bad-tempered

being irritable and bad-tempered

having a tendency to be sad or pensive

having a tendency to be sad or pensive

a formal way to describe someone's character; '... of a nervous disposition'

to possess a particular type of character

to exhibit or display a particular type of character