surprise

nouns

the astonishment you feel when something totally unexpected happens to you
is a type of (narrower)
the feeling that accompanies something extremely surprising
"he looked at me in astonishment"
a sudden unexpected event
is a type of (narrower)
an event that occurs when something passes from one state or phase to another
"the change was intended to increase sales"; "this storm is certainly a change for the worse"; "the neighborhood had undergone few modifications since his last visit years ago"
the act of surprising someone

verbs

cause to be surprised
"The news really surprised me"
is derived from
is a type of (narrower)
have an emotional or cognitive impact upon
"This child impressed me as unusually mature"; "This behavior struck me as odd"
come upon or take unawares
"She surprised the couple"; "He surprised an interesting scene"
is derived from
is a type of (narrower)
perform an action, or work out or perform (an action)
"think before you act"; "We must move quickly"; "The governor should act on the new energy bill"; "The nanny acted quickly by grabbing the toddler and covering him with a wet towel"
attack by storm; attack suddenly
is derived from