Highly reserved in some matter, particularly tight-lipped or tight-fisted.
Having no weak points or flaws.
Impermeable to air or other gases.
Hermetically sealed.
Isolated, away from outside influence.
Pertaining to alchemy or occult practices; magical, alchemical.
Pertaining to Hermes Trismegistus or the writings attributed to him.
One who follows/worships Hermes.
Pertaining ancient Greek Olympian God Hermes