- Absolutely necessary - Bringing back some relatives is crucial - Essential - Important - Integral - Belonging or relating to life, either animal or vegetable;
as, vital energies; vital functions; vital actions. - Contributing to life; necessary to, or supporting, life; as,
vital blood.
- Essential (point) - Need - Requirement - something that is essential or very important rather than just desirable - The quality or state of being necessary, unavoidable, or
absolutely requisite; inevitableness; indispensableness. - The condition of being needy or necessitous; pressing
need; indigence; want. - That which is necessary; a necessary; a requisite;
something indispensable; -- often in the plural.