expendable

The definition of expendable is someone or something that is disposable or not necessary or important.

(adjective)

A person who contributes nothing to a project and who is thus not necessary to complete it is an example of someone who is expendable.

See expendable in Webster's New World College Dictionary

adjective

that can be expended
Mil. designating or of equipment or personnel considered worth sacrificing to achieve an objective
designating or of a person or thing regarded as worth sacrificing under particular circumstances

noun

a person or thing considered expendable

Related Forms:

See expendable in American Heritage Dictionary 4

adjective

Subject to use or consumption: an expendable source.
Not worth salvaging or reusing: expendable rocket boosters.
Not strictly necessary; dispensable: an expendable budget item; expendable personnel.
Open to sacrifice in the interests of gaining an objective, especially a military one: expendable civilian targets.

noun

Something expendable.

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