黑乎乎 hēihūhū pitch-black Definitions Defs Origin Strokes Stroke Words Sentences Sents 黑 hēi adjective black the color of coal or ink; opposite of 白 bái乎 hū reduplication [suffix] (bound form) used as a suffix for certain adjectives or adverbs to emphasize a state or feeling; for example in 几乎 jīhū or 似乎 sìhū