Meaning of big whoop in English:

big whoop

(also big whup, big woop)

Pronunciation /ˌbɪɡ ˈwʊp/

exclamation

informal North American
  • Expressing dismissiveness: ‘So what?’ ‘Who cares?’.

noun

informal North American
  • Something of importance or significance; a big deal. Usually in negative contexts, as "no big whoop".

Origin

1980s. From big + whoop.