'accidentally-accepted' originates from the combination of 'accidentally' and 'accepted', where 'accidentally' comes from Latin 'accidentalis', meaning 'happening by chance', and 'accepted' from Latin 'acceptare', meaning 'to receive willingly'.

'accidentally' evolved from the Latin 'accidentalis' through Old French 'accidentel', and 'accepted' from Latin 'acceptare' through Old French 'accepter'.

Initially, 'accidentally' meant 'by chance', and 'accepted' meant 'received willingly'. The combined form 'accidentally-accepted' retains these meanings, indicating acceptance by chance.