Sound quality, also called timbre, is a characteristic of musical sounds.

And, of course, an appreciation for that quality called irony, since it's basically logical.

Is it a lack of that mystical but revered quality called will power?

It is said to build self-confidence, positive attitudes and a mysterious quality called spirit, which seems to involve smiling a lot.

The synthesis of or balance between these two is a third quality called calm or serenity.

Less tangible still is a quality called isotopic spin.

Maybe, some hoped, an even more abstract quality called technicolor would solve the problems.

It has become common to use only one logical quality, typically called logical assertion.

There was a quality called labra that the witches valued.

Another quality, called "rideability", is a measure of how comfortable and simple the horse is to ride.