13-Letter Words Containing: O,S,T,U,M

• a sexual attraction to (or sexual relations with) persons of the same sex

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

• sedative-hypnotic drug (trade name Quaalude) that is a drug of abuse

• Any qualified majority, specified in advance of a vote, required for the vote to be passed

• the act of making more human

• the act of preparing a summary (or an instance thereof); stating briefly and succinctly

• the act of making immune (especially by inoculation)