n (uncountable) Level of excellence.
n (countable) Something that differentiates a thing or person.
n (archaic) Position; status; rank.
n (archaic) High social position. (See also the quality.)
n (uncountable) The degree to which a man-made object or system is free from bugs and flaws, as opposed to scope of functions or quantity of items.
n (thermodynamics) In a two-phase liquid–vapor mixture, the ratio of the mass of vapor present to the total mass of the mixture.
n (emergency medicine, countable) The third step in OPQRST where the responder investigates what the NOI/MOI feels like.
n (countable, UK, journalism) A newspaper with relatively serious, high-quality content.
adj Being of good worth, well made, fit for purpose; of high quality.