(idiomatic) A contrary or conflicting purpose or understanding, especially an unintentional or misconceived one.

Alternative form of multipurpose

plural of cross-purpose

(dated) A conversational game, in which questions and answers are made so as to involve ludicrous combinations of ideas.

mission statement / (US, finance) An affidavit stating the purpose for a proposed loan.

(video games) A computer game that serves some purpose for the people setting up the game by harnessing human abilities in an entertaining setting.

Deliberately, though apparently accidentally.

(Britain) appropriate, and of a necessary standard, for its intended use.

Having two purposes; able to be used for two separate things.

(grammar) The use of the "to" infinitive form of a verb in answer to the implied question "why?".