1. (

• plainness

) the state of being unmixed with other material; "the plainness of vanilla ice cream" ;

2. (

• perspicuity ,
• perspicuousness ,
• plainness ,

) clarity as a consequence of being perspicuous ;

3. (

• plainness

) the appearance of being plain and unpretentious ;

4. (

• homeliness ,
• plainness ,

) an appearance that is not attractive or beautiful; "fine clothes could not conceal the girl's homeliness" ;