Strong’s Greek
G1644 — elaphria
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
ἐλαφρία
elaphria — pronounced el-af-ree'-ah
from 1645; levity (figuratively), i.e. fickleness:--lightness. see GREEK for 1645
1 occurrence in the KJV.
2 Corinthians 1:17
When I therefore was thus minded, did I use lightness? or the things that I purpose, do I purpose according to the flesh, that with me there should be yea yea, and nay nay?