have someone's (best) interests at heart

idiom

Definition of have someone's (best) interests at heart

: to be concerned about and want to help (someone) He claims that he has her (best) interests at heart.

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“Have someone's (best) interests at heart.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/have%20someone%27s%20%28best%29%20interests%20at%20heart. Accessed 11 Aug. 2020.

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