adverb · to dread or be afraid that something might happen

恐有不测，我们还是尽早做好准备。

adverb · to have a phobia of or to be afraid of something

因为恐高，他从来不敢尝试蹦极运动。

adjective · feeling fear or being in a state of fright

听到那个可怕的消息，他内心惶恐不安。