Bedeutung von “substitute” — Learner’s Dictionary

substitute

verb us uk /ˈsʌbstɪtjuːt/

B2 [ T ] to use someone or something instead of another person or thing:

You can substitute pasta for the rice, if you prefer.
substitute for sb

to do someone's job because they are not there:

I'm substituting for her while she's on holiday.
substitution noun [ C, U ] us uk /ˌsʌbstɪˈtjuːʃən/

(Definition von “substitute verb” aus dem Cambridge Learner's Dictionary © Cambridge University Press)