بودن

بودن is Persian’s verb “to be.” It splits into two forms: a suffix that glues onto adjectives, and the standalone هست for existence.

What it actually means

بودن means “to be” in Persian, but it does not behave the way English “to be” does. Persian splits the function of “to be” into two distinct grammatical pieces. The predication function (“X is Y”) uses verb suffixes that attach directly to the predicate: من خسته‌ام (man khaste-am, “I am tired,” literally “I tired-am”). The existence function (“there is, there exists”) uses the standalone form هست (hast). These two forms come from the same verb بودن, but they slot into different sentence types. The infinitive بودن is used for compound tenses (“I have been”) and as a noun (“being, existence”). Mastering بودن is mastering the entire scaffolding of Persian sentence structure.

How to say it

The predicative suffixes are the most-used part of بودن. خوبم (khūb-am, I am good), خونه‌ام (khūne-am, I am home), ایرانی‌ام (īrānī-am, I am Iranian). Negative form uses نیست (nīst): خونه نیستم (khūne nīstam, I am not home). Past stem is بود (būd-): بودم (būdam, I was), بودی (būdī, you were), بود (būd, he/she was). The standalone هست is reserved for “there is”: یه ماشین هست (ye māshīn hast, “there is a car”).

In a sentence

Cultural note

بودن traces to Old Persian *bav- (“to be, to become”), descending from the Proto-Indo-European root *bʰuH- (“to be”). Same root as English “be,” German “bin / bist,” Sanskrit “bhū-,” Greek “phύsis” (nature, the becoming). The cognate chain is one of the deepest in any language family. Persian’s split between the predicative suffixes and existential هست is unusual among Indo-European languages. Most modern European languages handle both functions with one verb: English “is” works for “she is tired” and “there is a problem.” Persian forces the split, which makes the predicative suffixes feel more lightweight in everyday use. Some linguists have argued that this split makes Persian’s “to be” closer to a copula clitic than a full verb, like Hebrew or Arabic in their nominal sentences.

Related

You will use this verb everywhere alongside کردن (to do), داشتن (to have), and رفتن (to go). For the deep history of Persian’s Indo-European verb roots, see 2,500 years of Persian.