say it: WAH-luhp
wallop is a noun and verb meaning "a forceful consequence; a strong effect". It carries 4 recorded senses.
a forceful consequence; a strong effect
“the book had an important impact on my thinking”
“the book packs a wallop”
a severe blow
hit hard
“The teacher whacked the boy”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for wallop come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.