noun / verb / adjective

substitute

SUB-stih-toot/ˈsʌbstɪtuːt/

A person or thing that takes the place of another.

The substitute teacher leads the class while the regular teacher is away.

A substitute teacher stands at a classroom desk holding lesson notes while original teacher's chair sits empty, diverse pupils.
Etymology

The combination of “under” and “set up” formed a verb meaning “put in another’s place.” A substitute is the person or thing placed in that replacement role.

In context

National Nutrition0:52
carob is from the pea family its seeds are dried roasted and ground into carob powder which is used as a chocolate substitute
Carob Benefits - Professional Supplement Review | National Nutrition Canada

More examples

  • You can substitute oil for butter in this recipe.
  • A substitute teacher led the class.
  • There is no easy substitute for careful practice.

Forms

substitute · substitutes · substituted · substituting

substitution noun — the replacement of one thing with another

Similar words

replacement
Usually something installed after another is removed.
alternative
Another available choice, not necessarily used in place of something.