Serious synonyms | Another word for serious

1. important

• Careful
• Consequential
• Critical
• Crucial
• Deep
• Detailed
• Far-reaching
• Grave
• High-priority
• Important
• In-depth
• Key
• Life-and-death
• Major
• Momentous
• No joke
• No laughing matter
• Of consequence
• Of moment
• Pressing
• Profound
• Significant
• Urgent
• Vital
• Weighty
• Meaningful

2. solemn

• Contemplative
• Deep in thought
• Dour
• Earnest
• Grave
• Grim
• Humourless
• Introspective
• Meditative
• Pensive
• Poker-faced
• Preoccupied
• Ruminative
• Sedate
• Sober
• Solemn
• Sombre
• Staid
• Stern
• Stony-faced
• Studious
• Thoughtful
• Unsmiling
• Bookish

3. intellectual

• Classical
• Cultured
• Deep
• Heavyweight
• Highbrow
• Intellectual
• Learned
• Literary
• Profound
• Scholarly
• Heavy

4. in earnest

• Committed
• Earnest
• Firm
• Genuine
• In earnest
• Meaning what one says
• Resolute
• Resolved
• Sincere
• Wholehearted
• Determined

5. severe

• Acute
• Alarming
• Bad
• Critical
• Dangerous
• Dire
• Dreadful
• Extreme
• Grave
• Grievous
• Perilous
• Precarious
• Severe
• Terrible
• Worrying
• Parlous

6. quality

• OK
• Abundant
• Ample
• Appreciable
• Comfortable
• Considerable
• Decent
• Fair
• Generous
• Goodly
• Great
• Handsome
• Hefty
• Large
• Lavish
• Marked
• Not to be sneezed at
• Noticeable
• Plentiful
• Profuse
• Reasonable
• Significant
• Sizeable
• Substantial
• Superabundant
• Tidy
• Tolerable
• Worth having
• Worth taking into account
• Worthwhile
• Plenteous