He stared at the empty house with a blitheless expression, remembering how warm it once felt.

She tried to blithen the weary travelers with a warm meal and a cheerful story.

She blitheringly dismissed all the evidence, acting as if nothing could go wrong.

She listened to his blithering ramble and couldn't understand a word.

She kept blithering about trivial details during the meeting, distracting everyone.

His blithering during the debate made it impossible to follow his point.

She was blither than usual at the reunion, laughing and dancing all evening.

She tends to blither about trivial things when she's nervous.

Her blithesome laugh filled the sunlit room and lifted everyone's spirits.

Whenever the guest drinks too much, he blithers about his exes for hours.