流出|りゅうしゅつryuushutsu[0]heiban (flat)

1. noun, suru verb, intransitive verboutflow; effluence; efflux; spillage; spill; discharge; haemorrhage; hemorrhage; bleeding (e.g. of ink into paper)
2. noun, suru verb, intransitive verboutflow (of people, capital, etc.); drain (of gold, talent, etc. from a country); leak (e.g. of personal information)

• Synonym流れ出すながれだすNeutralNative verb for liquid flowing or pouring outward, or starting to flow; 「流出」 is a Sino-Japanese noun that also covers people, capital, and information draining away.
• Synonym流れ出るながれでるNeutralNative verb for liquid flowing from inside to outside, much like 「流れ出す」; 「流出」 leans toward written style and also covers outflows of talent and capital.
• Synonym漏出ろうしゅつWrittenWritten, technical term for liquid or gas escaping through gaps or damage; 「流出」 is not limited to gaps and also covers talent and capital draining away.
• Related放出ほうしゅつWrittenMostly releasing energy, radiation, or goods, as in 「エネルギーを放出」; the emphasis is on sending something out. 「流出」 is flowing away and often implies loss.
• RelatedこぼれるNeutralEveryday verb for liquid or powder spilling from a container, and for smiles or tears escaping; 「流出」 is a written noun usually for large-scale outflows.
• Related漏れるもれるNeutralEveryday verb for leaking through gaps, secrets getting out, or light and sound coming through; 「情報流出」 suggests large-scale leaks and has a more written feel.
• Related流れながれNeutralThe flow itself, a current, or the course of events, with no sense of escaping outward; 「流出」 specifically means moving from inside to outside.
• Related排出はいしゅつWrittenDischarging exhaust, wastewater, or bodily waste, as in 「CO2排出」; the point is getting rid of what is not needed. 「流出」 stresses flowing away or leaking out.
• Related放流ほうりゅうWrittenDeliberate human release, as of dam water or fish fry into rivers; 「流出」 is an outflow that happens on its own, and also covers talent and capital.
• RelatedあふれるNeutralThe same word as above, here written 「溢れる」, for liquid brimming over and spilling; read 「あふれる」, it is a different word for welling up and overflowing.
• Related漏るもるNeutralEveryday verb, mostly for rain or liquid seeping through a roof or container, as in 「雨が漏る」; 「流出」 is not limited to gaps and covers far more.
• Related溢流いつりゅうWrittenTechnical term for water overflowing from a container or channel, as with dam spillways; everyday speech uses 「溢れる」, and 「流出」 does not stress overflowing.
• Related漏れもれNeutralNoun for a leak or an omission, as in 「ガス漏れ」 or 「記入漏れ」; 「流出」 has no sense of omission and usually suggests a large-scale outflow.
• Antonym流入りゅうにゅうWrittenWater, people, or capital flowing in from outside — the exact opposite direction, as in 「人口流入」 versus 「人口流出」.

Use 「流出」 for liquids flowing out and for people, capital, or information draining away. In everyday speech, say 「流れ出る」 or 「流れ出す」 for liquid flowing out, 「漏れる」 for leaks, 「排出」 for emissions, and 「放流」 for releasing dam water. The opposite is 「流入」.

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

1. 水みずなどが流れ出ながれでること。
2. 人ひとや金銭きんせんなどが他ほかへ流れ出ながれでること。