yksinkertainen

Etymology
🇰🇲; the sense "of one, unique" was the original sense, but the other senses are already found in Old Literary Finnish.

Adjective

 * 1) simple, basic uncomplicated
 * 2) simple, plain unrefined, without frills
 * 3) simple, simple-minded lacking mental capacity
 * 4)  of one, unique, single, singular
 * 5)  one-time