小便|しょうべんshouben[3]nakadaka (mid-high)

1. noun, suru verb, intransitive verburine; piss; pee; urination
   朝立あさだちやしょんべんまでの命いのちかな。↗

   A morning erection: Will it last only until I take a leak?
2. noun, suru verb, intransitive verbbreaking a contract

• Synonym尿にょうNeutralNeutral word for urine, as in 「尿検査」; used in medical and formal settings, where 「小便」 would sound too blunt and colloquial.
• SynonymおしっこCasualChildish word for peeing, as in 「おしっこしたい」; the most common and relatively polite choice in everyday speech.
• Synonym小水しょうすいWrittenWritten euphemism for 「小便」, used mostly in hospitals, as in 「お小水」.
• Synonym排尿はいにょうWrittenMedical term for urination, as in 「排尿障害」; it focuses on the act of discharging urine.
• Synonym放尿ほうにょうWrittenWritten word for the act of urinating, seen mainly in news reports and public notices; 「小便」 is the more colloquial, blunt option.
• Synonym小用こようNeutralA polite euphemism for urinating, as in 「小用に立つ」; it can also mean a trivial matter and sounds a little old-fashioned.
• SynonymしっこCasualColloquial baby-talk short form of 「おしっこ」 for pee or peeing; used with small children.

「小便」 is the blunt everyday word, as in 「立ち小便」. For a softer tone or with children say 「おしっこ」; in medical or formal contexts use 「尿」 and 「排尿」; hospitals prefer 「お小水」; 「小用」 is a slightly old-fashioned polite euphemism.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 腎臓じんぞうで、血液けつえきから余分よぶんな水分すいぶんとともにこしとられた老廃物ろうはいぶつ、尿にょう。
2. 語義ごぎ1を体外たいがいに排出はいしゅつすること、排尿はいにょう、放尿ほうにょう。
3. 約束やくそくを反故ほごにすること。