Synonyms: failing, failure, failed, failless

Assumption: the term is one of simple alignment towards sexual meanings. Most of the applications which Webster distinguishes could be so polarized towards the sexual. Such as Emily used are: decline, to prove insufficient, sink, to omit, insolvent, bankrupt, to be extinct, to cease, to desert, to disappoint, not to attain, to cheat. It is apparent from this that most polarizations are toward penis failings, his failing to facilitate the mutual climax, his failing to make possible the crumb orgasm by precipitate collapse.