'wrongfully-transferred' originates from English components: 'wrongfully' (from 'wrong' + suffix '-ful' + adverbial '-ly') and 'transferred' (past participle of 'transfer', from Latin 'transferre' where 'trans-' meant 'across' and 'ferre' meant 'to carry').

'Transferre' passed into Old French 'transferer' and Middle English 'transfer(en)', becoming modern 'transfer'/'transferred'. 'Wrong' traces to Old English 'wrang/wrong' (‘unjust, crooked’), which formed 'wrongful' and then 'wrongfully'. These elements combined in modern legal usage as 'wrongfully transferred'.

Originally, 'transfer' meant simply 'to carry across/move'. With 'wrongfully', the combined phrase narrowed to mean movement done without right or in violation of law or duty.