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undersign

transitive verb
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Definition of undersign

: to write one's name at the foot or end of (as a letter or legal instrument)

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History and Etymology for undersign

under entry 3 + sign

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“Undersign.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/undersign. Accessed 2 Mar. 2021.

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