inconstant
adjective /ɪnˈkɒnstənt/
/ɪnˈkɑːnstənt/
(formal)- not faithful in love or friendship synonym fickleTopics Personal qualitiesc2
- that frequently changes opposite constant
Word Originlate Middle English: via Old French from Latin inconstant-, from in- ‘not’ + constant- ‘standing firm’ (from the verb constare, from con- ‘with’ + stare ‘stand’).