ordinary and uninteresting
nondescript - ordinary
Somebody or something ‘nondescript’ is not striking or unusual in any way, making them dull or uninteresting and therefore difficult to describe. It is mostly used in relation to inanimate things like buildings, but can also refer to a person with a particularly bland personality or appearance.
David lives in a rather nondescript house. It isn’t easy to find because it looks like every other house on that estate.
The robber had quite a nondescript appearance, which meant that he could blend seamlessly into the crowd when he made his escape.
The speaker at the conference had a pretty nondescript personality. He just prattled on in the same dull, monotonous way that most executives do.