extraordinary in size, amount, extent, degree, force, etc.

a prodigious research grant.

wonderful or marvelous

a prodigious feat.

abnormal; monstrous.

Obsolete . ominous.

adjective

little , small , tiny , common , insignificant , ordinary , unremarkable

adjective

big , colossal * , fantastic , giant , gigantic , gross , herculean * , immeasurable , immense , inordinate , jumbo * , king-size , large , mammoth , massive , mighty , monstrous , monumental , mortal , stupendous , towering , tremendous , vast , abnormal , amazing , astonishing , astounding , bad , exceptional , fab , heavy , impressive , marvelous , miraculous , out-of-this-world , phenomenal , preternatural , remarkable , spectacular , staggering , startling , state-of-the-art * , striking , surprising , unreal , unusual , utmost , wonderful , behemoth , brobdingnagian , bunyanesque , colossal , cyclopean , elephantine , enormous , gargantuan , gigantesque , herculean , heroic , huge , jumbo , massy , mastodonic , monster , mountainous , pythonic , titanic , fantastical , incredible , unbelievable , wondrous , epic , extraordinary , fabulous , grand