Simple past tense and past participle of baby-sit.(verb)
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Use "baby-sat" in a sentence
"Floating among the waves of Lucys were some people dressed as Ricky, played on the show by Ball's real life husband Desi Arnaz, and their TV neighbors Fred and Ethel Mertz, who often baby-sat for Little Ricky Ricardo."
"The old American lady at the corner of Hawthorne and Persimmon looked like she should be in a nursing-home and be baby-sat herself."
"“You say here that you have baby-sat quite a bit.”"