'anticommercialistic' originates in Modern English as a compound formed from the prefix 'anti-' (from Greek 'anti-' meaning 'against') + 'commercial' (from French/Latin roots) + the adjectival suffix '-istic'.

'commercial' comes from Latin 'commercium' meaning 'trade' → Old French 'comercial'/'commercial' → Middle English 'commercial'; later English formed adjectives with suffixes such as '-istic', and the modern compound 'anti-' + 'commercial' + '-istic' yielded 'anticommercialistic'.

Initially the parts meant 'against' + 'trade' (i.e., opposed to trade or commercialization); over time the compound's use has come to mean specifically 'opposed to commercialism or the commercialization of culture/activities'.