How do you say the word light in every language?

It's impossible to provide the word for "light" in every language. There are thousands of languages spoken around the world, and the exact translation can vary depending on context (e.g., light as a source of illumination, light as a feeling, light as weight).

However, I can give you a few examples in different language families:

Indo-European:

* English: light

* French: lumière

* Spanish: luz

* German: Licht

* Italian: luce

* Russian: свет (svet)

* Hindi: प्रकाश (prakāś)

* Persian: نور (nūr)

* Greek: φως (fos)

* Latin: lux

Sino-Tibetan:

* Mandarin Chinese: 光 (guāng)

* Cantonese: 光 (gwong)

* Tibetan: འོད་ (öd)

Afro-Asiatic:

* Arabic: نور (nūr)

* Hebrew: אור (or)

Austronesian:

* Tagalog: liwanag

* Malay: cahaya

Other:

* Japanese: 光 (hikari)

* Korean: 빛 (bit)

This is just a small sample. To find the word for "light" in a specific language, you can use an online translator or consult a dictionary.

Remember, language is constantly evolving and there are always regional variations.