Romance Languages:
* Spanish: simple
* French: simple
* Italian: semplice
* Portuguese: simples
* Romanian: simplu
Germanic Languages:
* German: einfach
* Dutch: simpel
* Swedish: enkel
* Norwegian: enkel
* Danish: enkel
* English: simple
Slavic Languages:
* Russian: простой (prostoy)
* Polish: prosty
* Czech: jednoduchý
* Ukrainian: простий (prostyy)
* Serbian: jednostavan
* Bulgarian: прост (prost)
Other Languages:
* Japanese: 簡単 (kan-tan)
* Chinese (Mandarin): 简单 (jiǎndān)
* Korean: 간단 (gandan)
* Arabic: بسيط (basīṭ)
* Hindi: सरल (saral)
* Greek: απλός (aplos)
Note: Some languages have multiple ways to say "simple" depending on the context or nuance. The words listed above are just some of the most common translations.