best friend dictionary noun [C] UK /ˌbest frend ˈdɪk.ʃᵊn.ᵊr.i/ US /ˌbest frend ˈdɪk.ʃᵊn.er.i/ a set of inside jokes and made-up words and phrases used by close friends You know you’re bonded with your best friend when you develop words and phrases of your own, almost like a secret language. On TikTok, this tradition has been … Continue reading New words – 20 October 2025
