Akademik

wallop
v. & n. sl.
—v.tr. (walloped, walloping)
1 a thrash; beat. b hit hard.
2 (as walloping adj.) big; strapping; thumping (a walloping profit).
—n.
1 a heavy blow; a thump.
2 Brit. beer or any alcoholic drink.
Derivatives:
walloping n.
Etymology: earlier senses 'gallop', 'boil', f. ONF (walop n. f.) waloper, OF galoper: cf. GALLOP

Useful english dictionary. 2012.