also: カイカイデー
Chinese loanword (from 快快的) used adverbially to mean doing something quickly or in a rush. Often has a casual, slightly emphatic tone.
from Chinese kuài kuài de
He finished the work hurriedly.
I walked swiftly and arrived at the station.
Standard kanji spelling for this Chinese-derived adverb.
Variant with long final vowel, common in casual speech and writing.
Borrowed from Chinese 快快的 (kuài kuài de), meaning 'quickly' or 'hurriedly'. The long-vowel variant カイカイデー reflects Japanese phonological adaptation.