[for fun] {prep. phr.} As amusement, not seriously, as a joke. […]

[for one's money] {prep. phr.} Regarding one's endorsement or support; as […]

[for to] {prep. phr.}, {dialect} So that you can; to. * […]

[in behalf of] or [on behalf of] {prep.}, {formal} 1. In […]

[in case of] also [in the event of] {prep.} In order […]

[in charge of] {prep.} 1. Responsible for; having supervision or care […]

[in consequence of] {prep.}, {formal} As a result of. * /In […]

[in defiance of] {prep.} Acting against; in disobedience to. * /The […]

[in favor of] {prep.} On the side of; in agreement with. […]

[in for] {prep.}, {informal} Unable to avoid; sure to get. * […]