The term 'inner' can be used to describe something that is located within or CLOSE to the center of something else. The crossword solutions for this term include 'INHERENT, ' which means existing as an inseparable part of something; 'CONCEALED, ' which means hidden from view; 'ESOTERIC, ' which means known only by a select few; 'INTRINSIC, ' which means belonging to the ESSENTIAL nature of something; 'NUCLEAR, ' which means located at the center of something; 'CLOSE, ' which means near in space, time, or relationship; 'PERSONAL, ' which means relating to a particular person; 'SECRET, ' which means not revealed or communicated to others; 'GUT, ' which means the innermost part of something; 'CENTRAL, ' which means located at the center; 'FOCAL, ' which means having or relating to a focus; 'ESSENTIAL, ' which means absolutely necessary; 'endo, ' which means inside; 'INTERIOR, ' which means inside or inner part; 'INTERNAL, ' which means happening or existing within a person or organization; 'EAR, ' which means the organ of hearing; 'CITY, ' which means the CENTRAL part of a town; 'TUBE, ' which means a hollow cylinder; and 'ental, ' which means pertaining to the INTERIOR.