Simple past tense and past participle of consternate.(verb)
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Use "consternated" in a sentence
"But it's hard not to be moderately consternated by the comments, or consterned, or whatever the word is."
"The BP guy seemed a bit consternated and said the reservoir is beneath miles of rock and that he hadn't heard anyone suggest bombing it."
"The Koreans, knowing perhaps that failure would mean summary execution, executed their own swarming defensive strategy and foiled, consternated and vexed the Brazilians so badly that Brazil's "beautiful game" became, right before our astonished eyes, the "not so prepossessing game.""