Simple past tense and past participle of brainstorm.(verb)
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Use "brainstormed" in a sentence
"E's pumpkin poem (first they "brainstormed" the alliterative words, she told me) (she did not say alliterative)"
""A lot of the staff comes from a long background in hotels, and we all kind of brainstormed and put together the color palette ourselves," Kaminski said."
"Marcia Patmos: Tina and I designed and brainstormed together, so now there is not the same collaboration, but I find inspiration everywhere I go, so I am happy to be able to draw on it all!"