D defs.my
Entry 2 senses · 2 variants Webster, 1913

Substitute

/sŭb'-stət-o͞otˌ/ · Sub·stit·ute · IPA /ˈsɐbstɪtjʉːt/
01 n. One who, or that which, is substituted or put in the place of another; one who acts for another; that which stands in lieu of something else
  1. 1.
    One who, or that which, is substituted or put in the place of another; one who acts for another; that which stands in lieu of something else(Mil.)
    “Hast thou not made me here thy substitute?” Milton.
    “Ladies [in Shakespeare's age] . . . wore masks as the sole substitute known to our ancestors for the modern parasol.” De Quincey.
02 v. t. To put in the place of another person or thing; to exchange.
imp. & p. p. Substituted; p. pr. & vb. n. Substituting
  1. 1.
    To put in the place of another person or thing; to exchange.
    “Some few verses are inserted or substituted in the room of others.” Congreve.