plain
Not mixed with extraneous elements.
“plain water”
Not elaborate or elaborated; simple.
“plain food”
“stuck to the plain facts”
Clearly revealed to the mind or the senses or judgment.
“made his meaning plain”
“it is plain that he is no reactionary”
Free from any effort to soften to disguise.
“the plain and unvarnished truth”
Lacking embellishment or ornamentation.
“a plain hair style”
Lacking patterns especially in color.
Lacking in physical beauty or proportion.
“a plain girl with a freckled face”
A basic knitting stitch made by putting the needle through the front of the stitch from the lefthand side.
Extensive tract of level open land.
“they emerged from the woods onto a vast open plain”
Express complaints, discontent, displeasure, or unhappiness.
“My mother complains all day”
Unmistakably (`plain' is often used informally for `plainly').
“You are plainly wrong”
“he is plain stubborn”