plain-looking

/P L EY1 N L UH0 K IH0 NG/
adjective
  1. 1

    Physically unattractive (of a person).

  2. 2

    Not beautiful, distinctive, or remarkable in appearance.

  3. 3

    Not too pretty, or too ugly; normal.

Source: https://en.wiktionary.org/wiki/plain-looking