know best

idiom
variants: or know what's best

Definition of know best

: to know or understand better than someone else what should be done I would take the highway myself, but you live here so you know best. I'll do whatever you say. You know what's best.

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“Know best.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/know%20best. Accessed 30 Nov. 2020.

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