How bad is the language in Left 4 Dead

that game is the most addicting thing everrrrr;
i love it;but if youre into the game you wouldn't really pay attention to the language,,
there is quite a few bad words though :/
definitely worth the buy!! (:
Actually there are quite a few cuss words but they never drop the f-bomb or say the n word they say the s word and hell alot that's all