in one's head

idiom

Definition of in one's head

: without needing to write anything down : mentally She did some quick calculations in her head.

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Dictionary Entries Near in one's head

in one's glory

in one's head

in one's heart

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Cite this Entry

“In one's head.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/in%20one%27s%20head. Accessed 26 Jan. 2022.

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