천천히
cheoncheonhi · TOPIK 1
slowly
🐢 cheon-cheon: the same slow syllable said twice, then -hi makes it an adverb
천천 is a doubled syllable, and saying it twice drags the word out, which suits the meaning. The ending 히 turns it into an adverb, like -ly in English: slow + ly. Compare 조용히 (quietly) and 열심히 (diligently).