to use something or someone instead of another thing or person
You can substitute oil for butter in this recipe.
Dayton was substituted for Williams in the second half of the game.
Allergy sufferers often need to substitute certain ingredients in recipes to accommodate their dietary restrictions.
In the absence of fresh tomatoes, you can substitute canned tomatoes in the pasta sauce.
The coach decided to substitute the injured player with a skilled backup during the crucial match.
Some people choose to substitute regular sugar with artificial sweeteners for a lower-calorie option.
