Strong's #2551: kakologeo (pronounced kak-ol-og-eh'-o)
from a compound of 2556 and 3056; to revile:--curse, speak evil of.
Thayer's Greek Lexicon:
́
kakologeō
1) to speak evil of, revile, abuse, one
2) to curse
Part of Speech: verb
Relation: from a compound of G2556 and G3056
Citing in TDNT: 3:468, 391
Usage:
This word is used 4 times:
Matthew 15:4: "and mother: and, He that curseth father or mother, let him die"
Mark 7:10: "and thy mother; and, whoso curseth father or mother, let him die"
Mark 9:39: "that can lightly speak evil of me."
Acts 19:9: "were hardened, and believed not, but spake evil of that way before the multitude,"