| feeling(noun, drive, character, passion, desire) |
| flash(noun, feeling, drive, passion, desire) |
| flimflam |
| folly(noun, whim, irregularity) |
| frame of mind(noun, expression, idiom, feeling, character) |
| frivolity(noun, passion, fashion, fantasy, craze) |
| frolic(trick, fun, humor, joke, gag) |
| furor(noun, passion, fashion, enthusiasm, fantasy) |
| gag(noun, fancy, trick, game, behavior) |
| gambol(trick, fun, humor, joke, gag) |
| goad(noun, feeling, drive, passion, desire) |
| groove(noun, desire, urge, hope, inclination) |
| ha-ha(noun, trick, fun, humor, joke) |
| haphazardness(noun, motivelessness) |
| happening(noun, passion, fancy, thing, enthusiasm) |
| heedlessness |
| hereticism(irregularity, peculiarity, nonconformity, aberration, abnormality) |
| hobby(noun, passion, fashion, fantasy, craze) |
| hoodwinking(trick, fun, humor, gag, witticism) |
| horseplay(trick, fun, humor, joke, gag) |