"informal" - key terms from Wikipedia

formal and informal
informal
informal	arguments
informal	attire
informal	bp
informal	definition
informal	diplomacy
informal	distance
informal	economy
informal	fallacy
informal	gluttony
informal	logic
informal	marriage
informal	name
informal	obi
informal	proof
informal	quebec french
informal	registers
informal	relations
informal	settlements
informal	singular
informal	social control
informal	upright
more informal