'rejectable' originates from English, formed from the verb 'reject' plus the suffix '-able'; 'reject' ultimately comes from Latin 'reicere', where 're-' meant 'back' and 'iacere' (or 'icere') meant 'to throw'.

'rejectable' developed from the modern English verb 'reject', which came into English via Middle English from Old French 'rejecter' and ultimately from Latin 'reicere'; the adjectival suffix '-able' was added in English to form 'rejectable'.

Initially, the Latin root 'reicere' literally meant 'to throw back'; over time, through Old French and Middle English, the sense shifted to 'refuse' or 'dismiss', and 'rejectable' now means 'able to be refused or dismissed'.