of astrology
secret, concealed
with a hidden meaning or a meaning not easily understood
secret; obscure in meaning
understood by, intended for, only a small number of people
mysterious, obscure
of hide
unseen, secret
using the latest technology
difficult, complex
that cannot be known because of the senses or fully understood, but can be sensed by the feelings
indefinite, obscured
complicated; (of machinery etc) built with many parts and difficult to understand
complicated, elaborate
based on thought and reasoning; (of poetry) intellectual and psychological, usually about themes such as love, religion and death
not physical; without physical presence
full of, suggesting, mystery
secret, concealed
a believer in, practiser of, mysticism
secret
hidden; not clearly seen; not easily understood; not well known
not easily understood
deep (the usual word); showing, having great knowledge
intellectual, thoughtful
(that is to be) kept from the knowledge or view of others; of which others have no knowledge
hidden, unrevealed
of, concerning, a practical, mechanical or industrial skill
concerning details, mechanics
of technology
concerning details, mechanics