An alternative spelling of 'choosable,' meaning capable of being chosen or selected.
Variant spelling of 'choosable' using '-eable' rather than '-able,' both from 'choose' plus '-able.' The '-eable' variant appears in British English and certain stylistic preferences.
English spelling is messy precisely because it records history—'chooseable' with the extra 'e' reflects pronunciation patterns from Middle English that we still sometimes write even though modern speech dropped the sound!
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