Antonyms of adj indispensable

3 senses of indispensable

Sense 1
indispensable (vs. dispensable) -- (not to be dispensed with; essential; "foods indispensable to good nutrition")

dispensable (vs. indispensable) -- (capable of being dispensed with or done without; "dispensable items of personal property")

Sense 2
essential, indispensable -- (absolutely necessary; vitally necessary; "essential tools and materials"; "funds essential to the completion of the project"; "an indispensable worker")

INDIRECT (VIA necessary) -> unnecessary, unneeded -- (not necessary)

Sense 3
indispensable -- (unavoidable; "the routine but indispensable ceremonies of state")

INDIRECT (VIA obligatory) -> optional -- (possible but not necessary; left to personal choice)

Similarity of adj indispensable

3 senses of indispensable

Sense 1
indispensable (vs. dispensable) -- (not to be dispensed with; essential; "foods indispensable to good nutrition")
       => critical, vital -- (urgently needed; absolutely necessary; "a critical element of the plan"; "critical medical supplies"; "vital for a healthy society"; "of vital interest")
          Also See-> necessary#1

Sense 2
essential, indispensable -- (absolutely necessary; vitally necessary; "essential tools and materials"; "funds essential to the completion of the project"; "an indispensable worker")
       => necessary (vs. unnecessary) -- (absolutely essential)

Sense 3
indispensable -- (unavoidable; "the routine but indispensable ceremonies of state")
       => obligatory (vs. optional) -- (morally or legally constraining or binding; "attendance is obligatory"; "an obligatory contribution")

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