Simple past tense and past participle of sadden.(verb)
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Use "saddened" in a sentence
"Long ago, when Azeroth was new and we were first sent to protect it and the Emerald Dream, those of my flight honored me by naming the field and that created within it the Eye of Ysera…this became the place from which we watched over everything…Her expression saddened."
""Yes," Delphi replied, and then her expression saddened a touch."
"The president was described as saddened by the news from home."