'unexpectedly-updated' originates from the combination of 'unexpectedly' and 'updated', where 'unexpectedly' comes from 'unexpected', meaning 'not anticipated', and 'updated' from 'update', meaning 'to bring up to date'.

'unexpectedly' evolved from 'unexpected', which was derived from the Latin 'exspectare', meaning 'to look out for'. 'Updated' comes from 'update', which originated from the Latin 'up', meaning 'up', and 'date', meaning 'to give'.

Initially, 'unexpectedly' meant 'not foreseen', and 'updated' meant 'brought up to date'. Together, they convey the idea of an update occurring without prior notice.