| false belief |
| false move(noun, expression, confusion, fault, lapse) |
| false step(noun, expression, confusion, fault, lapse) |
| falsity(slip, failure, fault, mistake, lapse) |
| faultiness(noun, deception, mistake, error, falsehood) |
| faute |
| faux pas(noun, expression, slip, confusion, failure) |
| figment of imagination(noun, expression, idiom, confusion, deception) |
| flub(noun, confusion, fault, mistake, lapse) |
| fluff(noun, confusion, fault, mistake, lapse) |
| garbling |
| goof(noun, slip, failure, fault, mistake) |
| head trip(noun, expression, confusion, deception, impression) |
| heresy(noun, deception, mistake, error, falsehood) |
| howler(noun, slip, failure, fault, mistake) |
| human error |
| idolism(noun, fancy, confusion, deception, impression) |
| ignus fatuus(noun, expression, confusion, deception, impression) |
| illogicality(noun, deception, mistake, error, falsehood) |
| image(noun, trip, fancy, confusion, deception) |