Austere quality or character; harshness, sternness, severity; (also) severe self-denial, asceticism.

Extreme strictness or stringency (of standards, conduct, etc.); scrupulousness or rigidity in the application of rules, principles, or precepts…

Strictness in behaviour, morals, or religious observance; fastidiousness, scrupulousness; rigid or puritanical propriety. Obsolete.

Strictness, rigid adherence to rules; the practice or conduct of a precisian; an instance of this. In earlier use: spec. Puritanism.

Extreme strictness in interpreting or enforcing a law, precept, etc.; an instance of this.

the practice of precision in behaviour and action (cf. precisianism, n.); (also) the doctrine or practice of the Precisionists (cf. precisionist, n.…