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simpleness

noun

• simplicity
• simple mindedness
• ease
• easiness
• chasteness
• restraint
• naiveness
• naivete
• naivety
• plainness
• quality

antonyms

• complexity
• difficulty

sounds kind of like

• sampling
• seasonableness
• semblance
• shambling
• shamefulness
• simmpleness
• sinfulness
• sniveling
• snuffling
• swine influenza
• symphalangus