: extremely important and necessary
She is an indispensable [=essential] part of the team.
an indispensable employee/tool
—often + for or toA calculator is an indispensable tool for solving these problems.
She is indispensable to the team.
Cite this Entry
“Indispensable.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/indispensable. Accessed 6 May. 2026.
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