RIGIDITY
inflexibility, rigidity, rigidness
(noun) the quality of being rigid and rigorously severe
rigidity, rigidness
(noun) the physical property of being stiff and resisting bending
Source: WordNet® 3.1
Etymology
Noun
rigidity (countable and uncountable, plural rigidities)
The quality or state of being rigid; want of pliability; the quality of resisting change of form; the amount of resistance with which a body opposes change of form.
Stiffness of appearance or manner; want of ease or elegance.
(economics) stickiness (of prices/wages etc.). Describing the tendency of prices and money wages to adjust to changes in the economy with a certain delay.
Synonyms
• rigidness
Antonyms
• flexibility
• ductility
• malleability
• softness
Source: Wiktionary
Ri*gid"i*ty, n. Etym: [L. rigiditas: cf. F. rigidité. See Rigid.]
1. The quality or state of being rigid; want of pliability; the
quality of resisting change of from; the amount of resistance with
which a body opposes change of form; -- opposed to flexibility,
ductility, malleability, and softness.
2. Stiffness of appearance or manner; want of ease or elegance. Sir
H. Wotton.
3. Severity; rigor. [Obs. orR.] Bp. Burnet.
Syn.
– Stiffness; rigidness; inflexibility.
Source: Webster’s Unabridged Dictionary 1913 Edition