deu: unerlässlich

Information
has URI	http://lexvo.org/id/term/deu/unerl%C3%A4sslich

Meaning
means	(adjective) absolutely necessary; vitally necessary; "essential tools and materials"; "funds essential to the completion of the project"; "an indispensable worker" indispensable, essential
means	(adjective) required by etiquette or usage or fashion; "instruction as to when and where a silk hat is de rigueur" de rigueur