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general::
Phrase(s): take a load off (of) someone’s mind [and] take a lot off (of) someone’s mind
Fig. to relieve one’s mind of a problem or a worry. (Of is usually retained before pronouns.) • I’m glad to hear that. It sure takes a load off of my mind. • This will take a load off her mind.
McGrawhill's American Idioms And Phrasal Verbs