- stiff or unyielding; not pliant or flexible; hard: a rigid strip of metal.
- firmly fixed or set.
- inflexible, strict, or severe: a rigid disciplinarian; rigid rules of social behavior.
- exacting; thorough; rigorous: a rigid examination.
- so as to meet precise standards; stringent: lenses ground to rigid specifications.
- Mechanics. of, relating to, or noting a body in which the distance between any pair of points remains fixed under all forces; having infinite values for its shear modulus, bulk modulus, and Young's modulus.
- (of an airship or dirigible) having a form maintained by a stiff, unyielding structure contained within the envelope.
- pertaining to a helicopter rotor that is held fixedly at its root.
Origin of rigid
SynonymsSee more synonyms for rigid on Thesaurus.com
Examples from the Web for rigidness
This rigidness of some men killed in battle I have often seen.Hugh Wynne, Free Quaker
S. Weir Mitchell
He smiled now as he thought of the rigidness of his boyish theology.The Trumpeter Swan
The extreme silence of all about me, and the rigidness of all objects seen, was very striking.Perseverance Island
It is true that the rigidness of her own home had not prevented her from making a hasty and unsuitable marriage.A Book of Sibyls
Anne Thackeray (Mrs. Richmond Ritchie)
But if the eyes were sad, the heavy jaw had a rigidness and setness which gave no indication of weakness or yielding.The Honorable Peter Stirling and What People Thought of Him
Paul Leicester Ford
- not bending; physically inflexible or stiffa rigid piece of plastic
- unbending; rigorously strict; severerigid rules
- completely or excessivelythe lecture bored him rigid
Word Origin and History for rigidness
early 15c., from Latin rigidus "hard, stiff, rough, severe," from rigere "be stiff," from PIE *reig- "stretch (tight), bind tightly, make fast" (cf. Old Irish riag "torture," Middle High German ric "band, string"). Related: Rigidly.