[adjective] [not gradable] - lasting forever or for a very long time; never endingThe company is engaged in the eternal search for a product that will lead the market.In some religious views, life is seen as an eternal conflict between the forces of good and evil.Will you two never stop your eternal arguing!(humorous) An eternal student is someone who tries to avoid getting a job for as long as possible by taking more educational courses.(UK) An eternal triangle (US and ANZ triangle or love triangle) is a situation where two people both love a third person, usually of the opposite sex.(saying) 'Hope springs eternal' means you are hopeful that something will happen even though it seems unlikely.I don't think I'll get the job, but hope springs eternal.
ETERNAL
Meaning of ETERNAL in English
Cambridge English vocab. Кембриджский английский словарь. 2012