surprise

(noun) the astonishment you feel when something totally unexpected happens to you.

(noun) a sudden unexpected event.

(noun) the act of surprising someone. Synonyms: surprisal.

(verb) cause to be surprised. Example: "The news really surprised me."

(verb) come upon or take unawares. Examples: "She surprised the couple." "He surprised an interesting scene."

(verb) attack by storm; attack suddenly. Synonyms: storm.