Synonyms of stiffening

stiffening

verb

present participle of stiffen

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