adj. 25B6; adjective ESSENTIAL, necessary, all-important, of the utmost importance, of the essence, vital, crucial, key, needed, required, requisite; invaluable.
superfluous.
adj. 25B6; adjective ESSENTIAL, necessary, all-important, of the utmost importance, of the essence, vital, crucial, key, needed, required, requisite; invaluable.
superfluous.
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012