absolutely necessary or essential
Water is indispensable for all living organisms.
Vocabulary like indispensable appears on the Digital SAT in Words-in-Context questions, where you choose the word that fits a passage's meaning and tone. You can also drill this word with vocabulary flashcards.
not clearly defined
accuse; accuse formally of a crime
a formal criminal accusation
lack of interest or concern
uncaring; marked by a lack of interest
extreme poverty
native; originating where it is found
random; failing to make or recognize distinctions
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