Mnemonic - e mail so terrific but meant for only the select few with special knowledge
Word - Esoteric
a) understood by or meant for only the select few with special knowledge
b) requiring knowledge restricted to a small group
Part of Speech - adjective
Synonyms - mysterious, cryptic, secret
Antonyms - common, public, obvious
1 The theory of relativity is an esoteric subject and I will be a fool to talk about it without any reference.
2 Many believe that the Priory of Sion was a esoteric society guarding a secret.
3 Freemasonry is considered as a esoteric cult full of secrets and mysteries.
4 Daughter of a Physicist, she was always interested in the esoteric nature of the universe.
5 An esoteric programming language or esolang is designed to test the boundaries of computer programming language design, as a proof of concept, or as a joke.