Adverb (fukushi), Noun which may take the genitive case particle 'no'
barely; just; narrowly; with difficulty
Onomatopoeic or mimetic word
ウチだって閑古鳥が鳴くようなカツカツの状態だから、バイトを雇う余裕なんてない。We're in a slump, barely scraping by, so we certainly don't have the margin to take on a part-time worker.
Also written かつかつ