serious

Meanings

• concerned with work or important matters rather than play or trivialities
  • "a serious student of history"
  • "a serious attempt to learn to ski"
  • "gave me a serious look"
  • "a serious young man"
  • "are you serious or joking?"
  • "Don't be so serious!"
• of great consequence
  • "marriage is a serious matter"
• causing fear or anxiety by threatening great harm
  • "a serious wound"
  • "a serious turn of events"
• appealing to the mind
  • "a serious book"
• completely lacking in playfulness
• requiring effort or concentration; complex and not easy to answer or solve
  • "raised serious objections to the proposal"
  • "the plan has a serious flaw"

Synonyms

dangerous, good, grave, grievous, life-threatening, severe, sober, unplayful