どきどき
どきどき · dokidoki · JLPT N2 · adverb
beat
💓 Mimetic word: doki is the sound of a thump, and doubling it means a fast, repeated beat
Doki is a sound-mimicking (giongo) word for a single heavy thump. Doubling it to doki-doki repeats that thump quickly, matching a racing heart.