Simple past tense and past participle of thank.(verb)
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Use "thanked" in a sentence
"And even though I wasn't at the awards ceremony, to hear my name thanked (of course!) in front of millions of viewers, along with the imminence of Sideways being Alexander Payne's next film, I truly began to believe that all the suffering and heartache, panic attacks, etc. had finally dealt me an almost mythological reprieve (I'm thinking of Lazarus here!)"
"The monks again thanked Mary and walked out the door."
"You are thanked from the bottom of my heart for taking charge of investigating such a blight."