stiffening up

Muscles becoming taut

Stiffening up describes the process of becoming stiff or rigid, especially muscles and joints growing sore and less flexible: My back is stiffening up from sitting too long, He could feel his shoulders stiffening up in the cold.

It often implies gradual onset—the body protesting after exertion, injury, or prolonged stillness.

Related

bracing yourself · hardening · resistance · immobilization · contraction · locking · locking up · fortification · hesitation · inflexibility · apprehension · cramping · muscle cramp · seizing up · freezing · obstinacy · digging in · resolve

Opposites
physical flexibility/rigidity

stiffening uploosening up

Reducing tension or rigidity

relaxing · loosening · limbering up · softening · unwinding

emotional/social demeanor

stiffening uploosening up

Reducing tension or rigidity

relaxing · unwinding · chilling out · letting loose · warming up

process direction

stiffening upsoftening up

Reducing resistance gradually

loosening up · relaxing · easing · yielding · giving way

Family

stiff, stiffen, stiffens, stiffened, stiffening, stiffly, stiffness, stiffer, stiffest

Familiarity
Top 100,000
Profile
Known to kids · Used worldwide · Timeless · Concrete · Everyday, not technical · Rated G