Noah Webster
Regularity
REGULAR'ITY, noun
1. Agreeableness to a rule or to established order; as the regularity of legal proceedings.
2. Method; certain order. regularity is the life of business.
3. Conformity to certain principles; as the regularity of a figure.
4. Steadiness or uniformity in a course; as the regularity of the motion of a heavenly body. There is no regularity in the vicissitudes of the weather.