monumental

1 ENTRIES FOUND:
monumental /ˌmɑːnjəˈmɛntl̟/ adjective
monumental
/ˌmɑːnjəˈmɛntl̟/
adjective
Britannica Dictionary definition of MONUMENTAL
1 
: very important
2 
: very great or extreme
3 
always used before a noun : of or relating to a monument

— monumentally

adverb