Synonyms of stiffens

stiffens

verb

present tense third-person singular of stiffen

as in strengthens

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

• strengthens
• hardens
• toughens
• harshens

Antonyms & Near Antonyms

• eases
• lessens
• softens
• moderates
• ameliorates