Appearing to be happy or cheerful; having a look or air of enjoyment (the suffix ～げ indicates apparent state).
子どもたちは楽しげに歌っていた。
The children were singing happily.
彼は楽しげに写真を眺めていた。
He was looking at the photos with a pleased expression.
その表情は楽しげで、場の雰囲気が明るくなった。
Her cheerful expression brightened the atmosphere.