'expectedly-extended' is a compound word formed from 'expectedly' and 'extended'. 'Expectedly' originates from the Latin word 'expectare', meaning 'to look out for', and 'extended' comes from the Latin 'extendere', meaning 'to stretch out'.

'expectedly' evolved from the Old French 'expecter', and 'extended' from the Old French 'estendre'. The combination of these words into 'expectedly-extended' is a modern English formation.

Initially, 'expectedly' meant 'in a manner that was anticipated', and 'extended' meant 'stretched out'. The combination retains these meanings in modern usage.