jesting

/ˈdʒɛstɪŋ/
adjective
  1. Said or done as a joke; not serious.
    • His jesting tone made everyone laugh, but she knew he meant it.
    • The teacher's jesting comment about homework lightened the mood.
    • I thought he was jesting when he said he would quit his job.
Antonyms
noun
  1. The act of making jokes or playful remarks.
    • Their constant jesting during the meeting annoyed the boss.
    • He was known for his good-natured jesting among friends.
    • A little jesting can help break the ice at a party.