Definition of underproof in English:

underproof

Syllabification: un·der·proof
Pronunciation: /ˌəndərˈpro͞of
 
/

adjective

Containing less alcohol than proof spirit does.
More example sentences
  • It is a bit underproof and is a standard for the rum and coke.

Definition of underproof in:

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Word of the day brannigan
Pronunciation: ˈbranigən
noun
a brawl or violent argument