/ ˈwɒləp; NAmE ˈwɑːl-/ noun , verb
■ noun
[ sing. ] ( informal ) a heavy powerful hit
■ verb [ vn ] ( informal )
1.
to hit sb/sth very hard
SYN thump
2.
to defeat sb completely in a contest, match, etc.
SYN thrash :
We walloped them 6–0.
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WORD ORIGIN
Middle English (as a noun denoting a horse's gallop): from Old Northern French walop (noun), waloper (verb), perhaps from a Germanic phrase meaning run well, from the bases of the adverb well and leap . Compare with gallop . From gallop the senses bubbling noise of a boiling liquid and then sound of a clumsy movement arose, leading to the current senses.