IPA: /əˈkɒmplɪʃəbl/
KK: /əˈkɑmplɪʃəbl/
Able to be achieved or completed successfully.
The project is ambitious, but it is still accomplishable within the given timeframe.
Accomplishable is formed from "accomplish" (from Old French *accomplir*, meaning to complete or fulfill) and "-able" (meaning capable of). The word means capable of being completed or fulfilled.
Think of something that is 'capable of being completed' — 'accomplish' means to complete, and '-able' indicates the ability to do so.