Key: "S:" = Show Synset (semantic) relations, "W:" = Show Word (lexical) relations
Display options for sense: (gloss) "an example sentence"
Adjective
S: (adj) indispensable (not to be dispensed with; essential) "foods indispensable to good nutrition"
S: (adj) essential, indispensable (absolutely necessary; vitally necessary) "essential tools and materials"; "funds essential to the completion of the project"; "an indispensable worker"
S: (adj) indispensable (unavoidable) "the routine but indispensable ceremonies of state"