noun, noun or participle which takes 'suru', intransitive verb
stiffening; rigidity; ossification
Describes physical stiffening (muscles, joints, corpses) and figurative rigidity (thinking, systems, negotiations). Often used with する to mean 'become stiff/rigid'.
寒さで体が硬直した。
My body stiffened from the cold.
交渉
The negotiations remain deadlocked with no progress.