the word 'unconventional' is a modern english formation built upon the older noun 'convention'. 'convention' itself stems from latin 'convenire', meaning "to come together, agree", composed of 'con-' (together) and 'venire' (to come). the literal sense of a gathering evolved to mean a formal agreement or a widely accepted custom. by adding the negative prefix 'un-' and the adjectival suffix '-al', the word directly constructs its meaning: "not pertaining to established custom or agreement". this transparent morphological structure clearly conveys the concept of deviating from societal norms.

Structure: un (not) + convention (agreement/custom) + al (adjective suffix) - un: a prefix of english origin, from old english 'un-', meaning "not". it functions as a negative particle. - convention: a noun of latin origin, from latin 'convention-', 'conventio' meaning "a meeting, agreement, covenant". it functions as the core root. - al: a suffix of latin origin, from latin '-alis', forming adjectives meaning "of or pertaining to". it functions as an adjectival suffix.