Not involving complication or intricacy; presenting little or no complexity or difficulty; straightforward to do or use, easy.

Straightforward, simple, basic; not intricate or complicated. Cf. plain sewing n. at compounds 3, plain work, n. 2.

Not complex; incomplex.

Not complex; not complicated or involved; simple.

Not complicated; uncomplicated; simple.

(un-, prefix1 affix 2.)

Presenting a clear course; free from difficulties.

simple, presenting no difficulties; also candid, straightforward.

That simplifies or oversimplifies something; characterized by simplicity, uncomplicated; simplistic.

Characterized by simplicity or over-simplicity; simplistic.

Of or relating to a simple or basic form, level, or standard; spec. relating to or concerned with the minute detail or basic constitutive units of a…