rigidity

noun

ri·​gid·​i·​ty rə-ˈji-də-tē 

plural rigidities

1

: the quality or state of being rigid

2

: one that is rigid (as in form or conduct)

Synonyms of rigidity

• severity

Examples of rigidity in a Sentence

sometimes the rigidity of the headmaster's discipline was deemed excessive by even much of the faculty

Recent Examples on the Web

Internal pressure gave the missile its structural rigidity, meaning the vehicle could buckle if insufficiently pressurized. — Atharva Gosavi, Interesting Engineering, 19 Sep. 2026

Parkinson’s is often marked by tremors, slow or impaired movement, tenseness or rigidity and difficulty balancing, as well as speech changes and loss of automatic motor functions like blinking or smiling, according to Mayo Clinic. — Rachel Raposas, PEOPLE, 17 Sep. 2026

The result is structure without rigidity, flexibility without losing accountability, and independence without losing connection. — Connie Etemadi, Miami Herald, 16 Sep. 2026

In 2022, Dion was diagnosed with stiff-person syndrome, a rare, debilitating progressive neurological disorder that causes muscle rigidity and spasms so violent Dion broke ribs. — Anna Cafolla, Vogue, 15 Sep. 2026

Word History

First Known Use

1607, in the meaning defined at sense 1

Rhymes for rigidity

• acidity
• aridity
• avidity
• cupidity
• fluidity
• humidity
• liquidity
• lucidity
• morbidity
• placidity
• rancidity
• rapidity

Medical Definition

rigidity

noun

ri·​gid·​i·​ty rə-ˈjid-ət-ē 

plural rigidities

: the quality or state of being rigid: as

a

: abnormal stiffness of muscle

muscle rigidity symptomatic of Parkinson's disease

—Diane Gershon

b

: emotional inflexibility and resistance to change