INFLEXIBILITY

inflexibility, rigidity, rigidness

(noun) the quality of being rigid and rigorously severe

inflexibility, inflexibleness

(noun) a lack of physical flexibility

Source: WordNet® 3.1

Etymology

Noun

inflexibility (usually uncountable, plural inflexibilities)

The quality or state of being inflexible, or not capable of being bent or changed; unyielding stiffness

Synonyms: inflexibleness, rigidity, obstinacy

Source: Wiktionary

In*flex"i*bil"i*ty, n. Etym: [Cf. F. inflexibilité.]

Definition: The quality or state of being inflexible, or not capable of being bent or changed; unyielding stiffness; inflexibleness; rigidity; firmness of will or purpose; unbending pertinacity; steadfastness; resoluteness; unchangeableness; obstinacy. The inflexibility of mechanism. A. Baxter. That grave inflexibility of soul. Churchill. The purity and inflexibility of their faith. T. Warton.

Source: Webster’s Unabridged Dictionary 1913 Edition