'antidynasty' originates from Modern English, specifically by combining the prefix 'anti-' (from Greek via Latin/Old French) and the noun 'dynasty' (from Greek 'dynasteia' via Latin and French), where 'anti-' meant 'against' and 'dynasty' meant 'rule of a family or ruler'.

'antidynasty' is a compound formed in recent English from 'anti-' + 'dynasty'. 'Dynasty' itself comes from Greek 'dynasteia' (meaning 'power, rule'), which passed into Late Latin and Old French before entering Middle English as 'dynastie' and modern English 'dynasty'. The prefix 'anti-' comes from Greek 'anti-' meaning 'against' and entered English via Classical and Medieval usage.

Initially the parts meant 'against' and 'rule of a family'; combined they simply denoted opposition to dynastic rule. Over time the compound has been used more broadly to criticize political family dominance, nepotism, or entrenched elite succession beyond literal monarchic dynasties.