Abbott-Smith Manual Greek Lexicon
κνήθω (G2833)
1 * κνήθω (late form of κνάω ), to scratch . to tickle ; pass., to itch : II Ti 4:3 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain
Strong's G2833 · Greek
κνήθομαι
knetho · knay'-tho
from a primary knao (to scrape); to scratch, i.e. (by implication) to tickle