1. An earnest and sincere feeling
   - earnestness, sincerity 
2. The quality of arousing fear or distress
   "he learned the seriousness of his illness"
   - distressfulness 
3. The trait of being serious
   "a lack of solemnity is not necessarily a lack of seriousness"
   - earnestness, serious-mindedness, sincerity

Derived forms: seriousnesses

See also: frivolous, serious

Type of: badness, gravity, severeness, severity, solemnity, trait

Antonym: frivolity

Encyclopedia: Seriousness

• eff and blind
• eff off
• effable
• efface
• effaceable
• effacement
• effect
• effected
• effecter
• effective
• effectively
• effectiveness
• effectivity
• effector
• effects
• platen
• plater
• plateresque
• platform
• platform bed
• platform game
• platform rocker
• platformer
• Plath
• Platichthys