Phenomenal means very great or impressive. Learn how to use this adjective with synonyms, pictures, pronunciation and usage notes from the Oxford Advanced Learner's Dictionary. Phenomenal means extremely successful or special, especially in a surprising way. Learn how to use this adjective in different contexts and see translations in other languages. 'Phenomenal' in a sentence: The train of the high-low style looks phenomenal blowing in the wind on the bow of a boat! Phenomenal definition: highly extraordinary or prodigious; exceptional.. See examples of PHENOMENAL used in a sentence.
