English

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Pronunciation

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Etymology 1

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Verb

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unbuttoned

  1. simple past and past participle of unbutton
    I unbuttoned my shirt to take it off.

Etymology 2

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From un- +‎ buttoned. In some instances possibly from unbutton.[1]

Adjective

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unbuttoned (comparative more unbuttoned, superlative most unbuttoned)

  1. Having the buttons undone.
  2. In disarray. (Can we add an example for this sense?)
  3. Informal, casual.
Antonyms
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References

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  1. ^ James A. H. Murray et al., editors (1884–1928), “Unbu·ttoned, ppl. a.”, in A New English Dictionary on Historical Principles (Oxford English Dictionary), volume X, Part 1 (Ti–U), London: Clarendon Press, →OCLC, page 73, column 3:[Un-1 8.] [] 2. [] In some instances possibly f. Unbutton v.