Nantoka/忪sōng忪 (sōng) is a Chinese word meaning “used in 惺忪[xing1 song1]”.Meanings1used in 惺忪[xing1 song1]Related words惺忪drowsy-eyed忪restless怔忪frightened睡眼惺忪(idiom) sleepy-eyed; still half asleepStudy Chinese with flashcards →