Adjective
Physically unattractive (of a person).
Not beautiful, distinctive, or remarkable in appearance.
Not too pretty, or too ugly; normal.
Source: en.wiktionary.orgI feel like that intellectual but plain-looking lady who was warmly complimented on her beauty. Bertrand Russell
A poor and plain-looking princess who had followed her father's misfortunes, she was said to be virtuous. Source: Internet
As described by Caroline Austen (Jane's niece) and Reginald Bigg-Wither (a descendant), Harris was unattractive—a large, plain-looking man who spoke little, stuttered, was aggressive in conversation and almost completely tactless. Source: Internet
Julia explains she wants more than a man who is interested in a pretty face, and that's why she's been deceptive - substituting a plain-looking woman in place of her own picture. Source: Internet