2 ENTRIES FOUND:
  1. serious (adjective)
  2. serious-minded (adjective)

se·ri·ous

adj \ˈsir-ē-əs\

Definition of SERIOUS

1
: thoughtful or subdued in appearance or manner : sober <a quiet, serious girl>
2
a : requiring much thought or work <serious study> b : of or relating to a matter of importance <a serious play>
3
a : not joking or trifling : being in earnest <a serious question> b archaic : pious c : deeply interested : devoted <a serious musician>
4
a : not easily answered or solved <serious objections> b : having important or dangerous possible consequences <a serious injury>
5
: excessive or impressive in quality, quantity, extent, or degree <serious stereo equipment> <making serious money> <serious drinking>
— se·ri·ous·ness noun