All life-or-death synonyms

adj life-or-death

• necessary — being essential, indispensable, or requisite: a necessary part of the motor.
• key — a small metal instrument specially cut to fit into a lock and move its bolt.
• integral — of, relating to, or belonging as a part of the whole; constituent or component: integral parts.
• needed — necessary, required, or wanted (usually used in combination): a much-needed vacation.
• fundamental — serving as, or being an essential part of, a foundation or basis; basic; underlying: fundamental principles; the fundamental structure.
• indispensable — absolutely necessary, essential, or requisite: an indispensable member of the staff.
• crucial — If you describe something as crucial, you mean it is extremely important.
• urgent — compelling or requiring immediate action or attention; imperative; pressing: an urgent matter.
• important — of much or great significance or consequence: an important event in world history.
• imperative — imperative language
• critical — If a person is critical or in a critical condition in hospital, they are seriously ill.
• significant — important; of consequence.
• basic — You use basic to describe things, activities, and principles that are very important or necessary, and on which others depend.
• decisive — If a fact, action, or event is decisive, it makes it certain that there will be a particular result.
• meaningful — full of meaning, significance, purpose, or value; purposeful; significant: a meaningful wink; a meaningful choice.
• cardinal — A cardinal is a high-ranking priest in the Catholic church.
• heavy — of great weight; hard to lift or carry: a heavy load.
• name — a dictionary of given names that indicates whether a name is usually male, female, or unisex and often includes origins as well as meanings; for example, as by indicating that Evangeline, meaning “good news,” comes from Greek. Used primarily as an aid in selecting a name for a baby, dictionaries of names may also include lists of famous people who have shared a name and information about its current popularity ranking.
• nitty-gritty — the essential substance or details of a matter; basics; crux: Let's skip the chitchat and get down to the nitty-gritty.
• prerequisite — required beforehand: a prerequisite fund of knowledge.
• required — to have need of; need: He requires medical care.
• requisite — required or necessary for a particular purpose, position, etc.; indispensable: the requisite skills of an engineer.
• constitutive — having power to enact, appoint, or establish
• bottom line — The bottom line in a decision or situation is the most important factor that you have to consider.
• meat-and-potatoes — fundamental; down-to-earth; basic: What are the meat-and-potatoes issues of the election?
• underlined — to mark with a line or lines underneath; underscore.