'appraisable' ultimately derives from the English verb 'appraise'. 'Appraise' originates from Old French (Anglo-French) 'apreisier'/'aprecier', from Vulgar Latin *appretiare, formed from Latin 'pretium' meaning 'price'.

'appraise' changed from Old French 'apreisier' (Medieval/Anglo-French) into Middle English forms (e.g., 'apreisen') and eventually became modern English 'appraise'; the adjectival form 'appraisable' was later formed from this verb.

Initially it referred specifically to setting or estimating a price ('to price' or 'to value'); over time it broadened to general assessment or evaluation, and now 'appraisable' means 'capable of being evaluated or valued' (including monetary appraisal).