phenomenally

adverb

phe·​nom·​e·​nal·​ly -nᵊlē How to pronounce phenomenally (audio)
-li
1
: in relation to phenomena
view that man is normally free although phenomenally determinedTimes Literary Supplement
2
: extraordinarily, remarkably
phenomenally successful classesNew York Times Book Review
a phenomenally dull and tasteless comedyWolcott Gibbs

Word History

Etymology

phenomenal entry 1 + -ly

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

  1. Expanded definitions
  2. Detailed etymologies
  3. Advanced search tools
  4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now

Browse Nearby Words

Cite this Entry

“Phenomenally.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/phenomenally. Accessed 14 Dec. 2025.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!