Strict vs. Lenient — What's the Difference?

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.

Inclined not to be harsh or strict; merciful or indulgent

Demanding that rules concerning behaviour are obeyed and observed

Not harsh or strict; merciful or generous

(of a person) following rules or beliefs exactly

Lax; not strict; tolerant of dissent or deviation

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

(medicine) A lenitive; an emollient.

Rigorous in the imposition of discipline

Relaxing; emollient; softening; assuasive; - sometimes followed by of.

Conforming completely to established rule, principle, or condition

Mild; clement; merciful; not rigorous or severe; as, a lenient disposition; a lenient judge or sentence.

Requiring close observance or demanding in expectations

A lenitive; an emollient.

Carefully maintained or observed

Tolerant or lenient;

Not loose or vague; exact or precise

Not strict;

(Botany) Stiff, narrow, and upright.

Characterized by tolerance and mercy

Strained; drawn close; tight.

Tense; not relaxed.

Exact; accurate; precise; rigorously particular.

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

Rigidly interpreted; exactly limited; confined; restricted.

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

Severe in discipline.

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

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

Tense; not relaxed; as, a strict fiber.

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;