fickle
/ˈfɪkəl/
adjective
- Likely to change opinions, loyalties, or interests suddenly and without good reason; not constant or dependable.
- The weather in spring is fickle, sunny one moment and rainy the next.
- Fickle fans stopped supporting the team after just two losses.
- She is fickle about her hobbies, switching from painting to guitar every few weeks.
Synonyms