substitute

Something or someone that takes the place of another is said to be a substitute. You may be sent into a game as a substitute for an injured player, or you might substitute chocolate chips for blueberries in a pancake recipe.

Substitute can be used as an adjective to describe something or someone that takes the place of another. Teenagers are notoriously hard on substitute teachers, sometimes giving them fake names or wrong information about classroom work. Substitute can also be used as a verb. So if you are asked to substitute for a teacher, you probably shouldn't believe everything the students tell you!

Definitions of substitute
1

n a person or thing that takes or can take the place of another

Synonyms:
replacement
Types:
ersatz
an artificial or inferior substitute or imitation
successor
a thing or person that immediately replaces something or someone
succedaneum
(medicine) something that can be used as a substitute (especially any medicine that may be taken in place of another)
Type of:
equivalent
a person or thing equal to another in value or measure or force or effect or significance etc

n someone who takes the place of another (as when things get dangerous or difficult)

Synonyms:
backup, backup man, fill-in, relief, reliever, stand-in
Types:
locum, locum tenens
someone (physician or clergyman) who substitutes temporarily for another member of the same profession
double, stunt man, stunt woman
a stand-in for movie stars to perform dangerous stunts
alternate, replacement, surrogate
someone who takes the place of another person
Type of:
compeer, equal, match, peer
a person who is of equal standing with another in a group

n an athlete who plays only when a starter on the team is replaced

Synonyms:
reserve, second-stringer
Types:
bench warmer
(sports) a substitute who seldom plays
pinch hitter
(baseball) a substitute for the regular batter
Type of:
athlete, jock
a person trained to compete in sports

v put in the place of another; switch seemingly equivalent items

substitute regular milk with fat-free milk”
Synonyms:
exchange, interchange, replace
Types:
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hide 5 types...
shift
move and exchange for another
reduce
simplify the form of a mathematical equation of expression by substituting one term for another
truncate
replace a corner by a plane
retool
provide (a workshop or factory) with new tools
subrogate
substitute one creditor for another, as in the case where an insurance company sues the person who caused an accident for the insured
Type of:
alter, change, modify
cause to change; make different; cause a transformation

v be a substitute

“The young teacher had to substitute for the sick colleague”
“The skim milk substitutes for cream--we are on a strict diet”
Synonyms:
fill in, stand in, sub
Type of:
change, exchange, interchange
give to, and receive from, one another

v act as a substitute

Synonyms:
deputise, deputize, step in
Types:
cover
help out by taking someone's place and temporarily assuming his responsibilities
Type of:
replace, supercede, supersede, supervene upon, supplant
take the place or move into the position of

adj serving or used in place of another

Synonyms:
alternate, alternative
secondary
being of second rank or importance or value; not direct or immediate

adj artificial and inferior

substitute coffee”
Synonyms:
ersatz
artificial, unreal
contrived by art rather than nature

adj capable of substituting in any of several positions on a team

Synonyms:
utility
secondary
being of second rank or importance or value; not direct or immediate

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