How do you say simple in Korean?
— 간단한 (gandan-han); 간단하다 (gandan-hada)

Generic synonyms for simple in Korean
person사람 (saram); 인 (-in)
someone누군가 (nugunga)
soul영혼 (yeonghon); 혼백 (honbaek)
Specialized synonyms for simple in Korean
fool바보 (babo)
idiot백치 (baekchi)
sheep양 (yang), 면양 (myeonyang)
square광장 (gwangjang)
Similar to for simple in Korean
easy쉬운 (swiun)
Also for simple in Korean
easy쉬운 (swiun)