Words

whops

whop

,

wop

or less commonly

whap

(wɒpPronunciation for whap) informal
  verb whops, whopping or whopped
    1 (transitive) to strike, beat, or thrash
    2 (transitive) to defeat utterly
    3 (intransitive) to drop or fall

▷ 
noun
    4 a heavy blow or the sound made by such a blow
  [C14: variant of wap, perhaps of imitative origin]