Main entry: indispensable
Definition: not to be dispensed with; essential
Usage: foods indispensable to good nutrition
Antonyms: dispensable
Definition: capable of being dispensed with or done without
Antonyms: uncritical
Definition: not critical; not tending to find or call attention to errors
Antonyms: noncritical, uncritical
Definition: marked by disregard for critical standards or procedures
Antonyms: noncritical, noncrucial
Definition: not in a state of crisis or emergency
Antonyms: noncritical
Definition: not critical; not at a point of abrupt change
Main entry: indispensable, essential
Definition: absolutely necessary; vitally necessary
Usage: essential tools and materials; funds essential to the completion of the project; an indispensable worker
Antonyms: unnecessary, unneeded
Definition: not necessary
Main entry: indispensable
Definition: unavoidable
Usage: the routine but indispensable ceremonies of state
Antonyms: optional
Definition: possible but not necessary; left to personal choice