13-Letter Words Containing: R,A,F,A

• serving to make familiar

• A cycloalkane.

• in an affirmative manner

• (mathematics) the resolution of an expression into factors such that when multiplied together they give the original expression

• the act of making formal (as by stating formal rules governing classes of expressions)

• To separate into parts or fractions; to fractionate

• Any of a group of single-stranded RNA viruses belonging to the family Paramyxoviridae, which are the second most common cause of lower respiratory tract infection in younger children.

• Without enthusiasm or interest.