Matthew 11:19 (b) This name is applied to any evil person as an epithet of contempt. The Pharisees used this name for anyone who failed to agree with their doctrines and their manner of life. (See Luke 7:34).
Luke 18:10 (b) The word here is used to represent any evil person who comes to CHRIST in repentance and accepts the Saviour to be his Lord and Master.