- earnestness, seriousness, sincerity - an earnest and sincere feeling
--1 is a kind of gravity, solemnity
- seriousness, distressfulness - the quality of arousing fear or distress; "he learned the seriousness of his illness"
--2 is a kind of badness, severity
- seriousness, earnestness, serious-mindedness, sincerity - the trait of being serious; "a lack of solemnity is not necessarily a lack of seriousness"- Robert Rice
--3 is a kind of trait
Antonyms: frivolity, frivolousness
--3 has particulars:committedness, commitment; graveness, gravity, sobriety, soberness, somberness; sedateness, staidness, solemnity, solemness