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adj. Not flexible or pliant; stiff.

adj. Not moving; fixed.

adj. Marked by a lack of flexibility; rigorous and exacting: "We have watered down a rigid training . . . until we now have an educational diet in many of our public high schools that nourishes neither the classes nor the masses” ( Agnes Meyer).

adj. Scrupulously maintained or performed: rigid discipline. See Synonyms at stiff.

adj. Stiff, rather than flexible.

adj. Fixed, rather than moving.

adj. Rigorous and unbending.

adj. Uncompromising.

adj. Firm; stiff; unyielding; not pliant; not flexible.

adj. Hence, not lax or indulgent; severe; inflexible; strict

Stiff; not pliant or easily bent; not plastic or easily molded; resisting any change of form when acted upon by force; hard.

Not easily driven back or thrust out of place; unyielding; firm.

Not easily wrought upon or affected; inflexible; hence, harsh; severe; rigorous; rigorously framed or executed: as, a rigid sentence; rigid criticism.

Strict in opinion, conduct, discipline, or observance; uncompromising; scrupulously exact or exacting: as, a rigid disciplinarian; a rigid Calvinist.

Stiff in outline or aspect; harsh; hard; rugged; without smoothness, softness, or delicacy of appearance.

Sharp; severe; bitter; cruel.

In dynamics: Absolutely incapable of being strained.

Resisting stresses.

Synonyms and Severe, Rigorous, etc. (see austere), inflexible, unbending, unyielding.

adj. incapable of compromise or flexibility

adj. fixed and unmoving

adj. designating an airship or dirigible having a form maintained by a stiff unyielding frame or structure

adj. incapable of adapting or changing to meet circumstances

adj. incapable of or resistant to bending

"Two full seconds passed before Myles spoke, his expression rigid."

intolerant    unmoving    nonmoving    semirigid    unadaptable    inflexible   

moving    compromising    flexible   

unyielding    strict    formal    austere    rigid dynamics    rigid antennæ    rigid atrophy   

rigour    rigor   

rigidly    rigidity    rigidness   

unpliant    austere    unmitigated    exact    stern    inflexible    rigorous    unyielding    severe    strict   

frigid   

strict    stiff    exact    formal    stern    tight    steady