Simple past tense and past participle of complain.(verb)
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Use "complained" in a sentence
"After police pursued the Jeep and it crashed, Hamlin complained of neck and back pain, D.C. police said."
"You forgot to mention that, when McCain complained about how he'd never seen such a terrible thing before in the Senate, Senator Carl Levin pointed out that the ten-minute rule had been enforced just a few hours earlier that very day."
"McCain complained that while every single major reform bill that's been passed in the history of this country has been bipartisan ... there's no bipartisanship here."