substituting

sub·sti·tute  (sbst-tt, -tyt)

n.

1. One that takes the place of another; a replacement: "Fantasies are more than substitutes for unpleasant reality" (Barbara Grizzuti Harrison).

2. Grammar A word or construction used in place of another word, phrase, or clause.

v. sub·sti·tut·ed, sub·sti·tut·ing, sub·sti·tutes

v.tr.

1. To put or use (a person or thing) in place of another: "substituting moral power for physical force" (Elizabeth Cady Stanton).

2. Chemistry To replace (one or more elements or radicals in a compound) by other elements or radicals.

v.intr.

To take the place of another: "Only art can substitute for nature" (Leonard Bernstein).

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[Middle English, from Old French substitut, from Latin substittus, past participle of substituere, to substitute : sub-, in place of; see sub- + statuere, to cause to stand; see st- in Indo-European roots.]

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substi·tuta·bilit·y n.

substi·tuta·ble adj.

Thesaurus

Noun

1.

substituting - working as a substitute for someone who is ill or on leave of absence subbing work - activity directed toward making or doing something; "she checked several points needing further work"