plain
plain
adjective
Easy to understand; clearly expressed or obvious.
"The instructions were plain and simple."
noun
A large area of flat land with few trees.
"Vast plains stretch across the continent."
adjective
Not decorated or elaborate; simple in appearance or style.
"She preferred plain clothes for everyday wear."
Thesaurus
Synonyms: champaign, field, unadorned, spare, unembellished, unornamented, bare, undecorated, unattractive, homely, unpatterned, solid-colored