a person or thing that takes or can take the place of another
an athlete who plays only when a starter on the team is replaced
put in the place of another; switch seemingly equivalent items; "the con artist replaced the original with a fake Rembrandt"; "substitute regular milk with fat-free milk"
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"
act as a substitute; "She stood in for the soprano who suffered from a cold"
make a counterattack and return like for like, especially evil for evil; "The Empire strikes back"; "The Giants struck back and won the opener"; "The Israeli army retaliated for the Hamas bombing"
make fit or prepared; "Your education qualifies you for this job"
describe or portray the character or the qualities or peculiarities of; "You can characterize his behavior as that of an egotist"; "This poem can be characterized as a lament for a dead lover"
pronounce fit or able; "She was qualified to run the marathon"; "They nurses were qualified to administer the injections"