13-Letter Words Containing: I,O,R,S,U

• of or relating to quadraphony

• a group of viruses including those causing mumps and measles

• attempting to justify or defend in speech or writing

• providing justification

• the art of projecting your voice so that it seems to come from another source (as from a ventriloquist's dummy)

• a meeting planned at a certain time and place

• a place where people meet

• a date; usually with a member of the opposite sex

• meet at a rendezvous

• To categorize more specifically by placing in a subcategory.

• (grammar) To practice subcategorization.