whether or no

wheth·er

 (wĕth′ər, hwĕth′-)

conj.

1. Used in indirect questions to introduce one alternative: We should find out whether the museum is open. See Usage Notes at doubt, if.

2. Used to introduce alternative possibilities: Whether she wins or whether she loses, this is her last tournament.

3. Either: He passed the test, whether by skill or luck.

pron. Archaic

Which: "We came in full View of a great Island or Continent, (for we knew not whether)" (Jonathan Swift).

Idiom:

whether or no

Regardless of circumstances.

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[Middle English, from Old English hwether; see k^wo- in Indo-European roots.]

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.