adjective / noun
nondescript
NAHN-dih-skript/ˈnɑːndɪskrɪpt/
Without distinctive or easily recognizable features.
The office occupies a nondescript building on a busy street.

Etymology
The pieces suggest something “not written down,” and the word originally meant “not yet described.” It later meant difficult to describe or classify, then lacking any distinctive character.
In context
he's attractive in a nondescript way like he could blur into a background
More examples
- He wears a nondescript gray jacket that attracts no attention.
- Behind the restaurant's nondescript entrance lies a beautiful dining room.
- The witness remembers only a nondescript car parked nearby.
Forms
nondescript · nondescripts
Similar words
- plain
- Emphasizes lack of decoration rather than lack of identifying features.
- unremarkable
- Emphasizes being ordinary or unworthy of special attention.