indispensability
Cannot do without
Indispensability is the quality of being absolutely necessary—impossible to do without.
The word often appears in arguments for someone's or something's importance: She proved her indispensability to the project.
It can carry a hint of self-importance when someone insists on their own indispensability.
Required prior condition
- necessityIndispensable requirement
- preconditionNecessary prior requirement
- sine qua nonIndispensable condition
- requisiteSomething absolutely needed
imperative · mandatory · compulsory · obligatory · requirement · essential · needed · required
Essential animating element
- lifelineEssential connection to safety
- criticalExpressing disapproval or importance
- crucialOf supreme importance
- pivotalVitally important, deciding
paramount · central · integral · essential · cardinal · primary · preeminent · mission-critical
Foundational building block
- bedrockSolid stone underground
- foundationUnderlying support structure
- keystoneArch's central locking stone
- pillarUpright architectural support
backbone · groundwork · underpinning · infrastructure · framework · scaffolding · substratum · substrate
Only one exists
- peerlessHaving no equal
- matchlessHaving no equal
- unparalleledHaving no equivalent
- incomparableWithout equal or rival
one-of-a-kind · nonsubstitutable · invaluable · priceless · unmatched · singular · irreproducible · exceptional
prerequisite
Required prior condition
- necessityIndispensable requirement
- preconditionNecessary prior requirement
- sine qua nonIndispensable condition
requisite · imperative · mandatory · compulsory · obligatory · requirement · essential · needed · required · stipulation
lifeblood
Essential animating element
- lifelineEssential connection to safety
- criticalExpressing disapproval or importance
- crucialOf supreme importance
pivotal · paramount · central · integral · essential · cardinal · primary · preeminent · mission-critical · make-or-break
cornerstone
Foundational building block
- bedrockSolid stone underground
- foundationUnderlying support structure
- keystoneArch's central locking stone
pillar · backbone · groundwork · underpinning · infrastructure · framework · scaffolding · substratum · substrate · basis
unique
Only one exists
- peerlessHaving no equal
- matchlessHaving no equal
- unparalleledHaving no equivalent
incomparable · one-of-a-kind · nonsubstitutable · invaluable · priceless · unmatched · singular · irreproducible · exceptional · unrepeatable
indispensabilitydispensability
Quality of being unneeded
expendability · optionality · superfluousness · superfluity · replaceability
indispensabilityworthlessness
Lack of any value
insignificance · triviality · unimportance · irrelevance · inconsequentiality
disposal, dispense, dispose, disposition, disposable, dispenser, indispensable, disposed, dispensed