English to English

verb (v)

• gnaw into; make resentful or angry(verb.emotion)

  Example:
  The injustice rankled her.
  

  Synonym:
  eat into, fret, grate
  

  source: wordnet30
• To become, or be, rank; to grow rank or strong; to be inflamed; to fester; -- used literally and figuratively.(verb)

  source: webster1913
• To cause to fester; to make sore; to inflame.(verb)

  source: webster1913