rigour

As a noun rigour

is severity or strictness.

As a letter x is

the twenty-fourth letter of the.

As a symbol x is

voiceless velar fricative.

As nouns the difference between rigour and concision

is that rigour is severity or strictness while concision is conciseness, brevity or terseness.

As a noun rigour

is severity or strictness.

As an adjective severe is

severe, harsh.

As a noun rigour

is severity or strictness.

As a verb discipline is

.

As nouns the difference between rigour and constraint

is that rigour is severity or strictness while constraint is something that constrains.

As nouns the difference between stringency and rigour

is that stringency is a rigorous imposition of standards while rigour is severity or strictness.

As nouns the difference between diligence and rigour

is that diligence is conscientiousness or determination or perseverance when doing something while rigour is severity or strictness.

As nouns the difference between rigour and earnestness

is that rigour is severity or strictness while earnestness is the quality of being earnest; sincerity; seriousness.

As nouns the difference between rigour and intensity

is that rigour is severity or strictness while intensity is the quality of being intense.

As nouns the difference between effort and rigour

is that effort is the work involved in performing an activity; exertion while rigour is severity or strictness.

As a verb effort

is (uncommon|intransitive) to make an effort.