steepen - definition and synonyms

verb [intransitive/transitive] 

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/ˈstiːpən/
present tense
I/you/we/theysteepen
he/she/itsteepens
present participlesteepening
past tensesteepened
past participlesteepened
  1. to become steeper, or to make something become steeper
     Synonyms and related words