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3. sub for

sub for

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sub for someone or something

to substitute for someone or something. I have to sub for Roger at work this weekend. Will pliers sub for the wrench you wanted?

See also: sub

sub someone for (someone else)

 and sub something for something else

to substitute someone for someone else or something for something else. I will sub Chuck for Roger for this next play only. We will sub the red ones for the blue ones.

See also: sub