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general::
Phrase(s): sit for someone
1. to care for someone in the role of babysitter. • I sit for Timmy sometimes. I like him. He’s a good little kid. • Mary doesn’t sit for anyone anymore. It leaves no time for a social life. 2. to serve as a babysitter in someone’s employ. • I sit for Mrs. Franklin every now and then. • Ted used to sit for the Wilsons. 3. to serve as a model or subject for someone, such as an artist. • She sat for the portrait painter every day for a week. • She is looking for someone to sit for her so she can develop her skills.
McGrawhill's American Idioms And Phrasal Verbs