恐怖
kǒngbù · HSK 7
fearful
😱👻 恐 fear + 怖 dread = terror; kǒngbù ends in bù, the spooky boo that scares you
Both characters mean fear, stacked for emphasis: 恐 (kǒng, dread) + 怖 (bù, terror). The final syllable bù echoes the English boo shouted to frighten someone, tagging this as the horror word.