Synonyms

whether or not

Idioms

Also, whether or no. Regardless of whether, no matter if. For example, Whether or not it rains, we're going to walk to the theater, or She plans to sing at the wedding, whether or no anyone asks her to. The negative element in these constructions may also follow the subject and verb, as in I have to attend, whether I want to or not. [c. 1600]

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Scientists attempting to determine whether or not hantavirus is present in Argentina's Ushuaia on Monday laid the very first traps to catch rodents potentially carrying the disease, AFP journalists observed.

From Barron's • May 19, 2026

"For me, making an accurate measurement is a way of bringing order to the universe, whether or not the number agrees with the expected value," he added.

From Science Daily • May 18, 2026

And whether or not the two gloves made the ultimate difference, his success in professional golf stems from his ability to control golf’s most unruly club.

From The Wall Street Journal • May 18, 2026

On the other side, Martin added, investors will be watching hyperscaler revenues, as well as those from OpenAI and Anthropic, to gauge whether or not there will be long-term support for the AI-infrastructure buildout.

From MarketWatch • May 13, 2026

Unfortunately, whether or not I’m ready to come clean about my double life is officially irrelevant.

From "Odd One Out" by Nic Stone

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023