Synonyms of stiffening

stiffening

verb

present participle of stiffen

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as in strengthening

to make more harsh, uncompromising, or severe

plans to further stiffen the already onerous requirements for admission to the elite military unit

Synonyms & Similar Words

• strengthening
• hardening
• toughening
• harshening

Antonyms & Near Antonyms

• easing
• softening
• lessening
• ameliorating
• moderating