Nonrigorous vs. Rigorous — What's the Difference?

Not rigorous.

Characterized by or adhering to strict standards or methods; exacting and thorough

Harsh, severe, or demanding

Very unpleasant or inclement

Adhering strictly to a belief or ideology; uncompromising or inflexible

Showing, causing, or favoring rigour/rigor; scrupulously accurate or strict; thorough.

Severe; intense.

Manifesting, exercising, or favoring rigor; allowing no abatement or mitigation; scrupulously accurate; exact; strict; severe; relentless; as, a rigorous officer of justice; a rigorous execution of law; a rigorous definition or demonstration.

Severe; intense; inclement; as, a rigorous winter.

Violent.

Adhering scrupulously and exactly to accepted principles; hence, logically valid; as, a rigorous proof.

Rigidly accurate; allowing no deviation from a standard;

Demanding strict attention to rules and procedures;

Used of circumstances (especially weather) that cause suffering;