- To become stiff or stiffer, in any sense of the
adjective.
2 . Stiffen
[ v. t.]
- To make stiff; to make less pliant or flexible; as, to
stiffen cloth with starch. - To inspissate; to make more thick or viscous; as, to
stiffen paste. - To make torpid; to benumb.
Meaning of 'stiffen' (Princeton's WordNet)
1 . stiffen
[ v]
Meaning (1): - become stiff or stiffer
Example in sentence:
He stiffened when he saw his boss enter the room
Meaning (2): - make stiff or stiffer
Example in sentence:
Stiffen the cream by adding gelatine
Meaning (3): - severely restrict in scope or extent