Strong's G858 — ἀφελότης (noun)
aphelotes (af-el-ot'-ace) n.
1. smoothness
2. (figuratively) simplicity
[from a compound of G1 (as a negative particle) and phellos (in the sense of) "a stone as stubbing the foot"]
KJV: singleness 
Root(s): G1 
Occurrences: 1