恐惧
kǒngjù · HSK 7
fear
恐 (fear) + 惧 (dread) = two fear-characters doubled up for emphasis
Both 恐 and 惧 independently mean to fear, so 恐惧 pairs near-synonyms to name intense dread. 惧 carries the 忄 heart-radical on its left, marking it as an emotion word.