1. serious

adjective. (ˈsɪriːəs) Concerned with work or important matters rather than play or trivialities.
Synonyms
real sincere serious-mindedness earnest sober serious-minded sobering grave earnestness solemn sedate sincerity thoughtful overserious seriousness solid
Antonyms
frivolity frivolous dishonest insincerity disingenuous
Etymology
serious (English)
seryows (Middle English (1100-1500))
serieux (Old French (842-ca. 1400))
seriosus (Latin)
serius (Latin)

2. serious-minded

adjective. Acting with or showing thought and good sense.
Synonyms
serious thoughtful
Antonyms
frivolous frivolity noncritical

3. serious-mindedness

noun. The trait of being serious.
Synonyms
serious frivolous sobriety seriousness gravity sedateness sombreness graveness trait soberness earnestness committedness somberness staidness sincerity solemness commitment solemnity
Antonyms
serious frivolity frivolous noncritical playful

4. serious

adjective. (ˈsɪriːəs) Of great consequence.
Synonyms
of import important
Antonyms
unimportant insubstantial insubstantiality
Etymology
serious (English)
seryows (Middle English (1100-1500))
serieux (Old French (842-ca. 1400))
seriosus (Latin)
serius (Latin)

5. serious

adjective. (ˈsɪriːəs) Causing fear or anxiety by threatening great harm.
Synonyms
life-threatening critical severe grave grievous dangerous
Antonyms
noncritical abstract counterfeit insincere unreal
Etymology
serious (English)
seryows (Middle English (1100-1500))
serieux (Old French (842-ca. 1400))
seriosus (Latin)
serius (Latin)

6. serious

adjective. (ˈsɪriːəs) Appealing to the mind.
Synonyms
good intellectual
Antonyms
nonintellectual false intangible
Etymology
serious (English)
seryows (Middle English (1100-1500))
serieux (Old French (842-ca. 1400))
seriosus (Latin)
serius (Latin)

7. serious

adjective. (ˈsɪriːəs) Completely lacking in playfulness.
Synonyms
unplayful sober fun playfulness
Antonyms
playful purposeless intoxicated colorful birth
Etymology
serious (English)
seryows (Middle English (1100-1500))
serieux (Old French (842-ca. 1400))
seriosus (Latin)
serius (Latin)

8. serious

adjective. (ˈsɪriːəs) Requiring effort or concentration; complex and not easy to answer or solve.
Synonyms
difficult hard
Antonyms
easy unrealistic unreality
Etymology
serious (English)
seryows (Middle English (1100-1500))
serieux (Old French (842-ca. 1400))
seriosus (Latin)
serius (Latin)
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