'applosive' is formed in modern English from the noun 'applause' + the adjectival suffix '-ive'. 'Applause' itself comes from Old French 'aplaus'/'aplaudir' and ultimately from Latin 'applaudere', where the prefix 'ad-' meant 'to, toward' and 'plaudere' meant 'to strike (hands) or clap.'

'applosive' developed directly in modern English by combining 'applause' (from Old French 'aplaudir', from Latin 'applaudere') with the suffix '-ive' (from Latin '-ivus' via French), yielding an adjective meaning 'causing applause'.

Originally the Latin root 'applaudere' meant 'to strike hands' (i.e., clap). Over time the sense shifted to 'express approval by clapping', and the English adjective now means 'causing or likely to provoke applause'.