deputise vs substitute what difference

what is difference between deputise and substitute



deputise (third-person singular simple present deputises, present participle deputising, simple past and past participle deputised)

  1. Non-Oxford British English standard spelling of deputize.


  • “deputise”, in Lexico,; Oxford University Press, 2019–present.


  • deputies



From Middle English substituten, from Latin substitutus, past participle of substituō.


  • (UK) IPA(key): /ˈsʌbstɪtʃuːt/, /ˈsʌbstɪtjuːt/
  • (US) IPA(key): /ˈsʌbstɪtut/, /ˈsʌbstɪtjut/
  • Hyphenation: sub‧sti‧tute
  • Rhymes: -uːt


substitute (third-person singular simple present substitutes, present participle substituting, simple past and past participle substituted)

  1. (transitive) To use in place of something else, with the same function.
    I had no shallots so I substituted onion.
  2. (transitive, in the phrase “substitute X for Y”) To use X in place of Y.
    I had to substitute new parts for the old ones.
  3. (transitive, formerly proscribed, in the phrase “substitute X with/by Y”) To use Y in place of X; to replace X with Y.
    I had to substitute old parts with the new ones.
  4. (transitive, sports) To remove (a player) from the field of play and bring on another in his place.
    He was playing poorly and was substituted after twenty minutes
  5. (intransitive) To serve as a replacement (for someone or something).
    • 1987, James Tobin, Essays in Economics, Vol. 2, p. 75
      Accumulation of wealth by this route may substitute for personal saving.

Usage notes

The verb “to substitute” can be used transitively in two opposite ways. “To substitute X” may mean either “use X in place of something else” (as in definitions 1 and 2), or “use something else in place of X” (as in definitions 3 and 4). The latter use is more recent, but it is widespread and now generally accepted (see the COED’s note on the matter). However, if the indirect object (the “something else”) is omitted, the preposition is also omitted, and the reader or hearer cannot tell which sense is meant:

  • “Substitute butter for olive oil” = Use butter instead of olive oil
  • “Substitute butter with olive oil” = Use olive oil instead of butter
  • “Substitute butter” = ???


  • (to replace X with Y): exchange, swap; See also Thesaurus:switch



substitute (plural substitutes)

  1. A replacement or stand-in for something that achieves a similar result or purpose.
    Synonyms: surrogate; see also Thesaurus:substitute
  2. (sports) A player who is available to replace another if the need arises, and who may or may not actually do so.
  3. (historical) One who enlists for military service in the place of a conscript.
  4. (economics) Abbreviation of substitute good.



  • bustitutes




  1. vocative masculine singular of substitūtus

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