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substantivate

transitive verb sub·stan·ti·vate \ ˈsəbztəntə̇ˌvāt , -bst- ; səbzˈtantəˌv- , -bˈst- \
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Definition of substantivate

-ed/-ing/-s
: to convert into or use as a substantive
  • the tendency to substantivate adjectives
—

substantivation

noun, plural -s

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