Appearing or seeming sad; showing signs of sorrow (the suffix -げ indicates an appearance or seeming state).
彼は悲しげな表情で窓の外を見ていた。
He was looking out the window with a sad expression.
悲しげに歌うその声が心に残った。
Her voice, singing sadly, stayed with me.
あの犬はどこか悲しげに小屋の中に横たわっていた。
That dog lay in the kennel looking somewhat sad.