adjective

simple

SIM-puhl/ˈsɪmpl/

Uncomplicated and unrefined.

The child completes the simple puzzle by joining two large halves.

A child easily completes a simple two-piece wooden shape puzzle, two large complementary halves fit into one round recess, relaxed confident action, no numbers or arrows.

Etymology

Latin simplex literally meant “one-fold.” The idea of having no parts, or few parts, developed into freedom from complication—and thus being easy to understand or do.

In context

Brian Douglas6:20

a simple controller is easy to implement two a simple controller is easy to tune test and troubleshoot

PID Control - A brief introduction

More examples

The new controls are simpler to use.
They enjoy a simple life without luxuries.
He is too simple to suspect that she is lying.

Forms

simple · simpler · simplest

simplicity noun — The quality of being plain or uncomplicated.

simplify verb — To make something easier or less complicated.

Similar words

uncomplicated: Emphasizes few difficulties or complexities, not a lack of sophistication.
plain: Emphasizes a lack of decoration or elaborate features.
naive: Specifically describes someone lacking experience or trusting too easily.