'antibias' is formed from the prefix 'anti-' (from Greek 'anti-', meaning 'against') and the noun 'bias' (from Old French 'biais', meaning 'slant' or 'obliquity').

'bias' entered English from Old French 'biais' (via Anglo-Norman) meaning 'slant' or 'inclination'. The prefix 'anti-' (Greek) combined with 'bias' in modern English usage, producing forms like 'anti-bias' in the 20th century (especially in educational and organizational contexts).

Initially the elements meant 'against' + 'slant/prejudice'; over time the compound has come to mean practices or attitudes explicitly intended to oppose or correct prejudice and discriminatory bias.