1. (adj) fixed; rectified.
2. (noun) a virgin.

Sex so terrible that you feel like you've become a virgin

Someone who unfucks the planet by changing their douchy un-eco friendly habits.

Unfuckable is the penis useless to fuck, not because the lack of erection, but due to its very small size, equal or inferior to 4 cm ( or 2 inches ) when erect, turning impossible the intercourse in the vagina ( ups and downs), to achieve the orgasm. In such cases, to obtain it, is necessary to use a penis pump to masturbate. The same occur with the buried ( in the pelvis) penises. Many times, the improper size refers only to the length of the organ, not the girth, that can be large ( only a big head outside the pelvis, but totally useless to move ).

Noun version of unfuckable

To correct a situation, or yourself if necessary.

Resolving a previously fucked up situation. Like an undo or back button.