Definition of "whyever" in English

adverb

1. (interrogative) Why ever: an emphatic form of why.

   • Whyever would someone do that?

2. (uncommon) For whatever reason.

   • You can use it whenever you want and whyever you want.

3. (uncommon) Regardless of the reason (why).

   • I don't care what you want. Whyever you're here, please go away.