Definition of prodigious:

far beyond what is usual in magnitude or degree

Synonyms of prodigious:

exceeding, exceptional, olympian, surpassing, enormous, immense, gigantic, huge, tremendous, colossal

Opposite/Antonyms of prodigious:

tiny, small, microscopic, normal, unremarkable, unexceptional, puny, teeny

Sentence/Example of prodigious:

The island of Sardinia has furnished a prodigious number of Phoenician seals.