'anticlassicalness' originates from English, specifically formed by combining the prefix 'anti-' (from Greek 'anti-' meaning 'against'), the adjective 'classical' (from Latin 'classicus' via French and Middle English, meaning 'of a class, belonging to the highest class' and later 'relating to classical style'), and the suffix '-ness' (from Old English '-ness' indicating 'state or quality').

'anti-' derives from Greek 'anti' meaning 'against'; 'classicus' in Latin passed into French as 'classique' and into Middle English as 'classical'; the adjectival form 'anticlassical' (against classical) was later nominalized with the English suffix '-ness' to produce 'anticlassicalness'.

Initially, the components meant 'against' (anti-), 'of the class/high standard or relating to classical style' (classical), and 'state/quality' (-ness); over time they combined to mean specifically 'the state or quality of being opposed to classical principles or styles'.