What are the antonyms for SOFTENING?

Synonyms for SOFTENING

Usage Examples for SOFTENING

  1. My own belief is I've got softening of the brain. - "Blind Love" by Wilkie Collins
  2. His Mississippi- Atlantic strategy is a delirium of a softening brain. - "Diary from March 4, 1861, to November 12, 1862" by Adam Gurowski