the state of being unmixed with other material;
"the plainness of vanilla ice cream"
clarity as a consequence of being perspicuous
the appearance of being plain and unpretentious
an appearance that is not attractive or beautiful;
"fine clothes could not conceal the girl's homeliness"
- The Afghan Hound is an aristocrat, his whole appearance one of dignity and aloofness with no trace of plainness or coarseness.
- plain 清楚的