The word 'surprisingly-incomplete' is a compound adjective formed by combining 'surprisingly' and 'incomplete'. 'Surprisingly' originates from the word 'surprise', which comes from the Old French 'surprendre', meaning 'to overtake'. 'Incomplete' comes from the Latin 'incompletus', where 'in-' means 'not' and 'completus' means 'filled up'.

'Surprisingly' evolved from the Old French 'surprendre', while 'incomplete' evolved from the Latin 'incompletus'. The combination of these words into 'surprisingly-incomplete' is a modern English formation.

Initially, 'surprise' meant 'to overtake', and 'incomplete' meant 'not filled up'. Over time, 'surprisingly-incomplete' has come to mean lacking expected elements in an unforeseen manner.