119 serious synonyms include important, significant, consequential, of consequence, momentous, of moment, key, grave, weighty, and far-reaching. Serious is an adjective, and its antonyms are trivial, unimportant, and superficial. Here are some additional synonyms for "serious" with example sentences.
119 other ways to say serious.
A minor mistake led to a serious reprimand.
Breaking the law can lead to serious consequences.
Fortunately, the injury wasn’t as serious as it initially appeared.
He wasn’t sure if she was joking or serious.
Monarchs rarely abdicate without serious reason.
Neglect can lead to serious problems.
Poor judgment in the situation led to serious consequences for everyone involved.
She has a serious injury.
This is a serious problem.
We’re talking about serious issues today.