خوب is the Persian word that holds a conversation together. It means good. It also means “I’m fine,” “yeah, sure,” and “OK, moving on.”
What it actually means
خوب means “good” in Persian and works as both an adjective and an adverb. The reach is wide: خوب covers “good food,” “feeling good,” “good idea,” “okay,” and the conversational filler that lets a speaker pivot to a new topic (“خوب, ادامه بده”, okay, continue). Iranians use خوب hundreds of times a day. The standard greeting response “خوبی؟” (are you good?) is answered with “ممنون, خوبم” (thanks, I’m good). Adverbially, خوب means “well”: “خوب میخوابم” (I sleep well), “خوب نوشتی” (you wrote well). The word’s dual life as adjective and adverb means it slots into almost any sentence shape.
How to say it
Formal
khūb
“good, well”
خوب
Colloquial (Tehrani)
khūb · same form, often used as conversational filler “khob”
also functions as “okay, alright, well then”
خوب
The comparative is بهتر (behtar, “better”) and the superlative is بهترین (behtarīn, “best”). Both are irregular. Persian builds them from a different root than خوب, the way English builds “good / better / best” from different roots.
In a sentence
khēylī khūb-e
It’s very good.
خیلی خوبه.
hāl-am khūb-e
I’m fine.
حالم خوبه.
khob, biyā berīm
Okay, let’s go.
خوب، بیا بریم.
Cultural note
خوب is native Persian, traceable to Old Persian *huwāp- (“of good work, accomplished”). The native root survives across modern Iranian languages: Kurdish “xweş,” Pashto “ښه” (kha). The word’s reach as a conversational filler is striking. Iranians say “خوب” the way Americans say “well” or “okay”: as a sentence-opener that buys a moment to think, or a transition that signals the speaker is moving on. In writing, خوب stays an adjective. In speech, it carries half the conversational glue. Pair it with خوشحال (happy) and you have most of the positive emotional vocabulary an Iranian friend will use about you. The phrase “خوب, پس…” (okay, so…) opens hundreds of Iranian conversations every day, the way “well, so…” opens English ones. It is not a meaningful statement on its own, but a piece of conversational scaffolding that signals the speaker is about to make a point.
Related
You will see this word together with خوشحال (happy) and گرم (warm), the other foundational A1 adjectives. Pair it with the negation: بد (bad). For the full A1 register kit, see our guide to 100 Persian collocations native speakers just know.
References
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