adjective. Not being burdened by trouble, worry, or care; happy and carefree. synonym: glad.

adjective. Joyful, glad, taking pleasure in being alive. Not depressed or sad.

adjective. Enjoyable lack of seriousness, not grave.

"I told Myra, and we're standing there in lighthearted conversation, leaning against each other like girlfriends, when the cop gets out and walks stiffbacked over to us."

airy  blithe  blithesome  breezy  buoyant