Translation of all the Hindi (or other languages') terminologies used in Let's Talk About Murder in an alphabetical order along with their pronunciations:

Aaicha Gho (aa-ee-cha gh-o)

Literally means mother's husband in Marathi, which is one of the official languages in India, but it is used as an expression to convey "holy shit"

Arey yaar (auh-ray yaar)

Literally means Oh, friend but here, it is used as an expression that means what the hell, man?

Bacha lena (buchha leh-na)

Save me

Ek din (ay-k deen)

One day.

Haan (haa)

Yes or In Agreement.

Hey, Bhagwaan (hey, bh-ugg-wahn)

Oh, dear God

Kuch nahi (koo-ch nuh-hee)

Nothing.

Nahi (nuh-hee)

No.