-ard, -art

(a suffix which forms nouns that refer to people who regularly engage in some activity, or who are characterized in a certain way, as indicated by the stem or root of the word; originally, which appeared in Middle English in words from Old French where it expressed an intensive degree or with a pejorative or disparaging application)

braggard, braggart (s) (noun); braggards, braggarts (pl)
A very boastful and talkative person who glorifies himself, or herself, in conversations about his or her achievements, possessions, etc.: James was such a braggart that he really disturbed people because he couldn't stop talking about winning the tennis match against a former professional player.
coward (s) (noun), cowards (pl)
Someone who lacks courage in facing danger, difficult situations, opposition by others, pain, etc.; a timid or easily intimidated person: The soldier was an obvious coward who deserted his fellow troops by sneaking away during the night when he was on guard duty and trying to hide in a nearby city.
drunkard (s) (noun), drunkards (pl)
Anyone who consumes too many alcoholic drinks and who is frequently or habitually drunk: Karen's father was a drunkard who couldn't take care of his family because any time he earned any money, he used it to buy whiskey and was also abusive with his wife and children.
wizard (s) (noun), wizards (pl)
1. Someone who practices magic; such as, a sorcerer or a magician: Mike was a wizard who entertained audiences with his unusual skills of mind reading and naming the owners of items which were collected and put in a box while he was blindfolded.
1. An especially skilled, knowledgeable, or clever person: Even at an early age, Shirley was a wizard at writing amazing stories.