Simple past tense and past participle of daydream.(verb)
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Use "daydreamed" in a sentence
"Downstairs, Kim made a teenage fortress of her bedroom, her books and papers strewn across her bed, where she did her homework or daydreamed."
"The room twirled in time; I dozed and daydreamed back to the past three Christmases."
"Most of the time he lay on his back and looked at the sky, the same one that arched over Ricardo Flores, and he daydreamed of Alba — her bronze skin, her black hair, the shame and joy on her face as she revealed herself to him."