Rigid vs. Strict — What's the Difference?

Unable to bend or be forced out of shape; not flexible

In mathematical writing, the term strict refers to the property of excluding equality and equivalence and often occurs in the context of inequality and monotonic functions. It is often attached to a technical term to indicate that the exclusive meaning of the term is to be understood.

Not able to be changed or adapted

Demanding that rules concerning behaviour are obeyed and observed

A lorry which is not articulated.

(of a person) following rules or beliefs exactly

Not flexible or pliant; stiff

Exact in correspondence or adherence to something; not allowing or admitting deviation or relaxation

Not moving or flexing

Rigorous in the imposition of discipline

Not changing or adjusting to different conditions or problems

Conforming completely to established rule, principle, or condition

Scrupulously or severely maintained or performed; rigorous or harsh

Requiring close observance or demanding in expectations

Being an airship with a external frame made of rigid parts.

Carefully maintained or observed

Stiff, rather than flexible.

Not loose or vague; exact or precise

Fixed, rather than moving.

(Botany) Stiff, narrow, and upright.

Rigorous and unbending.

Strained; drawn close; tight.

Uncompromising.

Tense; not relaxed.

(aviation) An airship whose shape is maintained solely by an internal and/or external rigid structural framework, without using internal gas pressure to stiffen the vehicle (the lifting gas is at atmospheric pressure); typically also equipped with multiple redundant gasbags, unlike other types of airship.

Exact; accurate; precise; rigorously particular.

A bicycle with no suspension system.

Governed or governing by exact rules; observing exact rules; severe; rigorous.

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

Rigidly interpreted; exactly limited; confined; restricted.

Hence, not lax or indulgent; severe; inflexible; strict; as, a rigid father or master; rigid discipline; rigid criticism; a rigid sentence.

(botany) Upright, or straight and narrow; — said of the shape of the plants or their flower clusters.

Incapable of or resistant to bending;

Severe in discipline.

Incapable of compromise or flexibility

Irreflexive; if the described object is defined to be reflexive, that condition is overridden and replaced with irreflexive.

Incapable of adapting or changing to meet circumstances;

Strained; drawn close; tight; as, a strict embrace; a strict ligature.

Fixed and unmoving;

Tense; not relaxed; as, a strict fiber.

Designating an airship or dirigible having a form maintained by a stiff unyielding frame or structure

Exact; accurate; precise; rigorously nice; as, to keep strict watch; to pay strict attention.

Governed or governing by exact rules; observing exact rules; severe; rigorous; as, very strict in observing the Sabbath.

Rigidly; interpreted; exactly limited; confined; restricted; as, to understand words in a strict sense.

Upright, or straight and narrow; - said of the shape of the plants or their flower clusters.

(of rules) stringently enforced;

Rigidly accurate; allowing no deviation from a standard;

Incapable of compromise or flexibility

Not indulgent;

Unsparing and uncompromising in discipline or judgment;

Severe and unremitting in making demands;