13-Letter Words Containing: R,E,G,U,R

• remove carbon from (an engine)

• brain surgery on human patients intended to relieve severe and otherwise intractable mental or behavioral problems

• a productive insight

• making an important discovery

• a penetration of a barrier such as an enemy's defense

• The furcula or wishbone.

• a tourist who is visiting sights of interest

• a person who stares inquisitively

• strain to watch; stare curiously

• One who is not a churchgoer, who does not attend church.

• ludicrous or incongruous unnaturalness or distortion