WordReference Random House Learner's Dictionary of American English © 2026
phe•nom•e•nal /fɪˈnɑmənəl/USA pronunciation adj.
WordReference Random House Unabridged Dictionary of American English © 2026- very remarkable, amazing, wonderful, or extraordinary:enjoyed phenomenal success as a race car driver.
phe•nom•e•nal
(fi nom′ə nl),USA pronunciation adj.
phe•nom′e•nal′i•ty, n.
phe•nom′e•nal•ly, adv.
- highly extraordinary or prodigious;
exceptional: phenomenal speed. - of or pertaining to phenomena.
- of the nature of a phenomenon;
cognizable by the senses.
- phenomen(on) + -al1 1815–25
phe•nom′e•nal•ly, adv.
- 1. . uncommon, outstanding, surpassing, unprecedented.