IPA: /əˈtɛmptəbl/
KK: /əˈtɛmptəbl/
Able to be tried or attempted.
The project is attemptable, so we should give it a try.
Attemptable → It is formed from "attempt" (from Old French *atempter*, meaning to try or test) and "-able" (meaning capable of). The word "attemptable" means capable of being tried or tested.
Think of something that is 'capable of being tried' — 'attempt' means to try, and '-able' indicates it can be done.