Serious Synonyms

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.

Another word for Serious

119 other ways to say serious.

1. important

2. solemn

  • unsmiling  
  •  
  • thoughtful
  •   
  • studious  
  •  
  • stony-faced  
  •  
  • stern  
  •  
  • staid  
  •  
  • sombre  
  •  
  • solemn  
  •  
  • sober  
  •  
  • sedate  
  •  
  • ruminative  
  •  
  • preoccupied  
  •  
  • poker-faced  
  •  
  • pensive  
  •  
  • meditative  
  •  
  • introspective  
  •  
  • humourless  
  •  
  • grim
  •   
  • grave
  •   
  • earnest  
  •  
  • dour  
  •  
  • deep in thought  
  •  
  • contemplative  
  •  
  • bookish  
  •  

3. intellectual

  • scholarly  
  •  
  • profound
  •   
  • literary  
  •  
  • learned  
  •  
  • intellectual  
  •  
  • highbrow  
  •  
  • heavyweight  
  •  
  • heavy
  •   
  • deep
  •   
  • cultured  
  •  
  • classical  
  •  

4. in earnest

5. severe

6. quality

Use serious in a Sentence

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.