monumental
adjective
[ mɒnjʊˈmɛnt(ə)l ]
• great in importance, extent, or size.
• "it's been a monumental effort"
Similar:
huge,
great,
enormous,
gigantic,
massive,
colossal,
mammoth,
immense,
tremendous,
mighty,
stupendous,
vast,
prodigious,
Herculean,
titanic,
gargantuan,
staggering,
exceptional,
extraordinary,
ginormous,
terrible,
dreadful,
awful,
catastrophic,
unforgivable,
indefensible,
whopping,
egregious,
impressive,
striking,
outstanding,
remarkable,
magnificent,
marvellous,
majestic,
ambitious,
large-scale,
grand,
awe-inspiring,
awesome,
important,
significant,
distinguished,
classic,
memorable,
transcendent,
exalted,
unforgettable,
enduring,
lasting,
abiding,
permanent,
immortal,
historic,
epoch-making,
• of or serving as a monument.
• "additional details are found in monumental inscriptions"