Simple past tense and past participle of nickname.(verb)
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Use "nicknamed" in a sentence
"But after a review, replay officials ruled that Potvin - nicknamed "The Cat" - dislodged the net while backing toward the crease, allowing Rucchin's pass to go under it."
"GOSAT, nicknamed "Ibuki" after the Japanese word for "vitality," will cover those countries and also the atmosphere over seas."
"As an aside, aripiprazol was nicknamed akathisiol in one hospital I worked in."