'anti-moralizing' originates from combining the prefix 'anti-' (from Greek 'antí' meaning 'against') with 'moralizing,' where 'moralizing' derives from French 'moraliser' and Latin 'moralis' meaning 'relating to manners or morals'.

'moralizing' changed from Latin 'moralis' to Old French/French 'moraliser' and entered English as 'moralize' (verb), later forming the gerund/participle 'moralizing'; the prefix 'anti-' (Greek 'antí') was attached in modern English to form 'anti-moralizing.'

Initially associated with making moral judgments or drawing moral lessons ('to moralize'); when combined with 'anti-' it came to mean 'against making moral judgments' or 'opposed to preachy moral commentary.'