Strong's #1644: elaphria (pronounced el-af-ree'-ah)
from 1645; levity (figuratively), i.e. fickleness:--lightness.
Thayer's Greek Lexicon:
̓́
elaphria
1) lightness
1a) used of levity and fickleness of mind
Part of Speech: noun feminine
Relation: from G1645
Usage:
This word is used 1 times:
2 Corinthians 1:17: "was thus minded, did I use lightness? or the things that"