'expectedly-maintained' is a compound word formed from 'expectedly' and 'maintained'. 'Expectedly' originates from the Latin word 'expectare', meaning 'to look out for', and 'maintained' comes from the Old French 'maintenir', meaning 'to hold in hand'.

'expectedly' evolved from the Latin 'expectare' through Old French 'expecter', while 'maintained' evolved from Old French 'maintenir'. The combination of these words into 'expectedly-maintained' is a modern English construct.

Initially, 'expectedly' meant 'in a manner that is anticipated', and 'maintained' meant 'kept in a certain state'. The combination retains these meanings, implying something kept as anticipated.