sock·dol·a·ger noun orsock·dol·o·geralsosoc·dol·a·ger\säkˈdäləjə(r)\ (-s) Etymology: perhaps alteration (influenced by sock) (V) of doxology 1.: something that ends or settles a matter : a decisive blow or answer : finisher 2.: something or someone outstanding or exceptional < a blizzard — a real sockdolager — Lorna Slocombe >