Noun serious-mindedness has 1 sense

• serious-mindedness(n = noun.attribute) earnestness, seriousness, sincerity - the trait of being serious; "a lack of solemnity is not necessarily a lack of seriousness"
is a kind of trait
has particulars: commitment, committedness, graveness, gravity, soberness, sobriety, somberness, sombreness, sedateness, solemness, solemnity, staidness
Derived form adjective serious-minded₁