Wise Vocabulary: similar words and phrases Toughness of will and determination aggressiveness bitter bloody-mindedness bull bull one thing by phrasal verb character-building fibre inflexibility insusceptible intransigence inveteracy mettle resiliently resolve sharp elbows idiom sharpen sharpen (a thing) up phrasal verb sharpen your elbows idiom unsusceptible wilfulness See far more https://carrieh420nbm3.sasugawiki.com/user