noun, noun which may take the genitive case particle 'no'
unrivaled physical strength; peerless might
Describes a person of unmatched physical power, often in a heroic or exaggerated context. Can be used as a noun or with の to modify another noun.
He is known as a sumo wrestler of unrivaled physical strength.
That warrior had peerless might, and no one could match him.
怪力 means 'superhuman strength' or 'monstrous strength' and is a component of 怪力無双. 怪力無双 emphasizes being unmatched in that strength.
無双 means 'unrivaled' or 'peerless' and is used in other compounds like 天下無双. 怪力無双 specifically applies this to physical strength.
A four-character compound combining 怪力 (superhuman strength) and 無双 (unrivaled). The exact origin is uncertain, but it follows a common pattern for describing exceptional qualities.