IPA: /ˈsɪmplnəs/
KK: /ˈsɪmplnəs/
The quality of being easy to understand or not complicated.
The simpleness of her explanation made it easy for everyone to follow.
Simpleness → It is formed from "simple" (from Latin "simplus", meaning single or uncomplicated) and the suffix "-ness" (meaning the state or quality of). The word "simpleness" refers to the quality of being simple or uncomplicated.
Think of 'simple' as being 'uncomplicated' and remember that 'simpleness' means the quality of being uncomplicated.