How do you say peaceful in all languages?

It's impossible to provide a translation for "peaceful" in *all* languages, as there are thousands of languages spoken worldwide.

However, I can give you some examples of how "peaceful" is translated in various language families:

Indo-European:

* English: Peaceful

* Spanish: Pacífico

* French: Pacifique

* German: Friedlich

* Italian: Pacifico

* Russian: Мирнoй (mirnoy)

* Hindi: शांत (shaant)

* Persian: آرام (ārom)

Sino-Tibetan:

* Mandarin Chinese: 平静 (píngjìng)

* Cantonese Chinese: 平靜 (pìngjìng)

* Tibetan: ཞི་བ (zhi-wa)

Afro-Asiatic:

* Arabic: سلمي (salmi)

* Hebrew: שלום (shalom)

Austronesian:

* Tagalog: Payapang

* Indonesian: Damai

Other:

* Japanese: 平和 (heiwa)

* Korean: 평화 (pyeong-hwa)

* Vietnamese: Yên bình

* Swahili: Amani

Important Notes:

* Nuances: Translations can sometimes have slightly different nuances depending on the context. For example, some languages may have separate words for "peaceful" as in a state of calm and "peaceful" as in a state of non-violence.

* Regional Variations: Even within a single language, there may be regional variations in how a word is used.

If you're looking for a translation for a specific language, it's best to use a reliable online translator or consult with a native speaker.