portentous
0 antonyms and opposites of portentous, grouped by meaning.
Adj — Of momentous or ominous significance.
We haven't recorded synonyms for portentous yet. You can still read its full definition, where it comes from, or words that rhyme with it.
Etymology
Of multiple origins: * Borrowed from Latin portentōsus, from portentus (“predicted”) + -ōsus. Compare earlier portentuous (via Middle English from Latin portentuōsus). By surface analysis, portent + -ous. * Borrowed from French portentueux
Full origin of portentous →