'antiliberalness' originates from English, specifically formed from the prefix 'anti-' (from Greek 'anti' meaning 'against'), the adjective 'liberal' (from Latin 'liberalis' meaning 'of freedom' or 'generous'), and the suffix '-ness' (from Old English 'nes(s)' meaning 'state or quality').

'antiliberalness' is a modern English formation created by combining 'anti-' + 'liberal' + '-ness'; it developed from the use of the adjective 'anti-liberal' and the nominalizing suffix '-ness' in contemporary English rather than from a single older source word.

Initially formed to denote 'the quality or condition of being anti-liberal,' and it has retained this meaning as a descriptive noun for opposition to liberalism.