She is a striking woman, intelligent, pretty and possessing some undefinable quality I find compelling.

Technically I was a better musician-but he had that undefinable quality that sells a song; he could make 'em cry or laugh.

But these were difficult to see, and aside from these the only difference was a certain undefinable quality in their posture and expression, which Laurence could not have adequately described for another's interpretation.

It's that undefinable quality we call wisdom.

A young oriental woman, rather plain, but with an undefinable sexual quality, stepped forward.

She looked so damned pretty in her crisply starched nurse's uniform and her quiet smile reflected the multitude of undefinable qualities that had so strongly drawn me to her.

This undefinable quality is partly what makes his one of the most original voices in the arena of contemporary classical music in New Zealand.

There was Butch Willis, whose songs had an undefinable otherworldly quality despite being about the mundane concerns of pop music.

It doesn't succeed in every respect, but it has that essential but undefinable quality: a voice.

Yet what really enchanted me was not so much her beauty, grace, kindliness and wit, but some wholly undefinable quality.