inconspicuous

US /ˌɪn.kənˈspɪk.ju.əs/
UK /ˌɪn.kənˈspɪk.ju.əs/
1.

눈에 띄지 않는

not easily or quickly noticed or seen, or not attracting attention:

:
This type of bird is very inconspicuous because of its dull feathers.