PRODIGIOUS

adj. 1 vast, immeasurable, colossal, enormous, huge, giant, gigantic, immense, mammoth, monumental, tremendous, stupendous, titanic, Brobdingnagian, gargantuan, Herculean, cyclopean, leviathan, monstrous, extensive, Colloq US ginormous, humongous There is a prodigious amount of water vapour contained in a cloudy sky You may accuse her of being a workaholic, but consider the prodigious amount she gets done in a day. 2 amazing, astonishing, astounding, startling, extraordinary, exceptional, marvellous, wonderful, wondrous, fabulous, miraculous, phenomenal, spectacular, fantastic, sensational, unusual, staggering, striking, dumbfounding or dumfounding, remarkable, noteworthy, notable, Colloq flabbergasting, mind-boggling, mind-blowing In those days, running a mile in four minutes was considered a prodigious feat