Why aren't there any common words for 'defecating' and 'urinating'?

Besides 'poo(p)ing' and 'peeing/weeing' used by and to children,

besides 'shitting/crapping' and 'pissing' which are spoken, not polite, says the Longman Dictionary of Contemporary English,

besides 'defecating/excreting' and 'urinating/micturating' which are technical and formal,

besides a long list of euphemistic terms,

why aren't there any common/standard verbs for these actions?

Solution 1:

This is an assumption made: that defecation and urination are technical terms. They are not, any more than penis and vagina are technical terms.

Is one only willing to accept crass or childish terms for everyday events, like breathing and eating? Do we adults pee and poop?

If you can't say defecate with a straight face, one can refer to passing stool, gas, or water. Or have a bowel movement, pass urine, pass gas, or relieve oneself. To make such universal functions taboo is to cave to Victorian fantasy that these things are simply never recognized.

Learning to exert control over our bowels and bladder is one of our first socializations in childhood. We are taught that passing stool into our underwear is socially unacceptable. But the vast majority of us are successful in mastering this skill, and we are proud of it when we do. Maybe Freud is to blame for making passing stool a traumatic experience.

Solution 2:

These words refer to actions that are somewhat taboo in most English-speaking cultures.

Given that, it’s not surprising that all the words for them get around the taboo in some way or another — by being either obscene themselves, or childish, or technical, or in some other way marked compared to “neutral” conversational vocabulary.

Solution 3:

For common use, to go forth is a proper term for to defecate, and to make water is likewise proper for to urinate.