Circumstantial
/ˌsɜr.kəmˈstæn.ʃəl/
Synonyms
- conditional
- contingent
- incidental
- situational
Slang Meanings
When something is based on the situation rather than a fixed rule.
It's all circumstantial; you know how things can change in an instant.
Used to describe a flimsy reasoning.
That excuse sounds pretty circumstantial to me.