Simple past tense and past participle of deplore.(verb)
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Use "deplored" in a sentence
"The only thing about it to he deplored is that it was unsuccessful."
"Sublime and intellectual as were these enlightened principles of morality, how vastly to be deplored is the fact that they are not more generally and permanently entertained."
"The UN envoy for the freedom of expression deplored the use of the media by Mexico's violent drug gangs during a visit to Ciudad Juarez on Tuesday."