Simple past tense and past participle of blubber.(verb)
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Use "blubbered" in a sentence
"He sobbed, blubbered and moaned, without shame or moderation."
"And when the short day left them, and the man lay down in the snow and blubbered, it was the woman who lashed him to the sled, bit her lips with the pain of her aching limbs, and helped the dog haul him to Malemute Kid's cabin."
"If I blubbered like a baby, everyone would guess what I was about to do."