Many ways can be used to say "the best friend" in Arabic. If you are refering to a guy friend, you would say " صديقي المفضل " for a girl friend, you would say " صديقتي المفضلة" And for more than one friends, for guys" أصدقائي المفضلين " For girls " صديقاتي المفضلات" Gosh, i didnt relaize how my lanaguge is sophisticated and hard to explain. Hopefually, my explanations made sense to you. You reach me if you need more help in Arabic

أحسن صاحب  :))))