MONUMENTAL

adj. 1 staggering, awe-inspiring, outstanding, prominent, stupendous, vast, awesome, epoch-making, historic, history-making, memorable, lasting, permanent, unforgettable, significant, notable, noteworthy, impressive, marvellous, prodigious, wonderful, wondrous, spectacular, magnificent, grand, striking, glorious, enduring, classic This work is a monumental contribution to linguistic theory 2 massive, huge, gigantic, enormous, prodigious, colossal, immense, vast, tremendous These monumental stones, each as big as a house, were dragged from a quarry hundreds of miles away 3 commemorative, memorial A monumental obelisk will be raised to mark the battle 4 egregious, catastrophic, calamitous, huge, enormous, awful, abject, terrible, unforgivable, unbelievable, monstrous, Colloq whopping Announcing our plans in advance could prove to be a monumental blunder