stiffen
sti fuhn
- v become stiff or stiffer
He stiffened when he saw his boss enter the room - v make stiff or stiffer
- v restrict
stiffen the regulations
- Food processors use liquid hydrogen to stiffen oils into shortening through "hydrogenation.
- Calcium can then build up in the vessels and stiffen them, laying the foundation for heart disease.
- Flying to Sarawak and North Borneo, "Harry" Lee picked up the chief ministers of both territories and brought them back to Kuala Lumpur to stiffen up the Tunku.