Hi, in my British English Dictionary I found " pen pal " and " pen friend " (without hyphen), plus it says that pen pal is used in informal texts.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
Vincent Teo(a) pen pal / pen-pal (AmE)
Which one is correct for British Eng?
(a) Pen pal / Pen-pal / Penpal
(b) Penfriend / pen-friend / pen friend