This is the 194th most frequent Persian word.
بی
The Persian word "بی" means "without."
The word 'بی' here is used as a prefix meaning 'without', modifying the noun 'دوست' to mean 'friendless' or 'without a friend'.
او تنها و بی دوست بود.
He was alone and without a friend.
The word 'بی' acts as a prefix meaning 'without', creating the compound word 'بیپایان' which translates to 'endless', implying 'without an end'.
این داستان بیپایان است.
This story is endless.
The word 'بی' again functions as a prefix signifying 'without', in the compound 'بیتأثیر', which means 'without effect', describing the impact of the subject's words.