'expectedly-retained' originates from the combination of 'expectedly' and 'retained', where 'expectedly' comes from 'expect', meaning 'to anticipate', and 'retained' from 'retain', meaning 'to keep or hold'.

'Expectedly' evolved from the Latin word 'expectare', and 'retained' from the Latin 'retinere'.

Initially, 'expectedly' meant 'in a manner that was anticipated', and 'retained' meant 'kept or held'. The combined form maintains these meanings.