まれ (mare) means “rare” | MotiTan Japanese Dictionary

More examples

彼が約束の時間に遅れるのはまれです。kare ga yaku soku no ji kan ni oku re ru no wa ma re de su

It is rare for him to be late for an appointment.

Describes a person, thing, or event that is not often found or experienced.

珍しいmezurashii: Not commonly seen, found, or experienced.
たまtama: Occurring or appearing only occasionally rather than regularly.

普通には見られず、該当するものや機会が少ないさま。fu tsū ni wa mi ra re zu gai tō su ru mo no ya ki kai ga suku na i sa ma

まれ (mare, "rare") is a native Japanese word that appears in Old Japanese records, while its earlier origin is not known with certainty.

A rare opportunity is one that does not come often, making rare useful for talking about experiences as well as physical things.