Simple past tense and past participle of treasure.(verb)
Valued (especially having a personal value)(adjective)
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Use "treasured" in a sentence
"I thought I'd ask one of the so-called treasured demographically enhanced viewers what they thought of the Oscar changes."
"Make a cover and artwork for the spine of the notebook, so that it is clearly identified as your treasured recipes."
"I was also very lucky that I didn't break my hand, though I did break a treasured watch that my father had passed on to me and also punctured an expensive hole in my living-room wall."