twilight

Universal Words noun, adjective noun [U] 1 the faint light or the period of time at the end of the day after the sun has gone down: It was hard to see him clearly in the twilight. * We went for a walk along the beach at twilight. 2 the ~ (of sth) (written) the final stage of sth when it becomes weaker or less important than it was: the twilight years (= the last years of your life) adjective [onlybeforenoun] 1 (written) used to describe a state in which things are strange and mysterious, or where things are kept secret and do not seem to be part of the real world: the twilight world of the occult * They lived in the twilight zone on the fringes of society. * The dissidents lived in a twilight world of hushed voices and secret meetings. 2 used to describe a situation or area of thought that is not clearly defined