This is the 17730th most frequent Russian word.
ужасу
"Ужасу" means "to horror" or "to terror" (dative form of "ужас" - horror).
Shows an expression of a frightful realization or discovery.
К моему ужасу, дверь медленно открылась.
To my horror, the door slowly opened.
Describes a state of emotional shock or fear.
Он пришёл в ужасу от увиденного.
He was overcome with horror by what he saw.
Indicates a reaction to an unexpected negative situation.