Esperanto is an artificial language, invented by Polish physician L. L. Zamenhof in 1887, for proposed international use. It is simple and streamlined. And it can be learned reportedly in just one-tenth the time it would take to learn a foreign language. It is reportedly culturally neutral. Although a small culture has in recent years been created, surrounding it. Zamenhof wanted anyone to be able to use it, and was quick to relinquish any ownership of the language after he created it. It also, like most languages, evolves naturally, as human culture changes. Usually whatever the root language is that a word comes from, is how new words are created. Slang terms theoretically don't exist in Esperanto. But as any language, some agree upon swear words have made their way in. Furzi means "to fart". Fiki is the F word. The S word has not been totally agreed upon. Some people think it should have the same common root as Merde, common in most Romance languages. Others think it is Feki. "Ho, fek!" literally means "Oh, sh——" in Esperanto. Fek is interesting, because it is only used as an interjection.
From the. Esperanto dictionary I got from Amazon. $10 as I remember. F@#$ fuku ,F@#$er fikanto ,s@!# fekao feko merdo ect. Ass azeno virazeno ,ass hole pugtruto . Vulva vulv o . These words might of been added later. I might find more if asked.
The problem with swear words, vulgarities, etc. is they are created out of emotion more than the average word is. To make up a word that is explicitly explicit doesn't organically give it the force of explicitness. I suppose you can make Esperantan swear words from other Indoeuropean languages the way other Esperantan words have been made, and maybe Mr. Zamenhof or another Esperantan authority has done this, but they lack the force of passion that years of experience have laid upon them. Edit: I see at least some epithets have been created. But my question stands: do they mean anything other than their semantic meaning?