Noun

(uncountable) The condition or quality of being regular; as, regularity of outline

I have been watching that show with regularity .

* {{quote-news

, year=2011 , date=October 29 , author=Phil McNulty , title=Chelsea 3 - 5 Arsenal , work=BBC Sport citation , page= , passage=For Chelsea coach Andre Villas-Boas, this was his most sobering moment in the Premier League and he looked stunned on the sidelines at the regularity with which Chelsea's defence was exposed.}}

(countable) A particular regular occurrence

Noun

(frequencies)

(uncountable) The rate of occurrence of anything; the relationship between incidence and time period.

* With growing confidence, the Viking’s raids increased in frequency .

* The frequency of bus service has been improved from 15 to 12 minutes.

(uncountable) The property of occurring often rather than infrequently.

* The FAQ addresses questions that come up with some frequency .

* The frequency of the visits was what annoyed him.

(countable) The quotient of the number of times $n$ a periodic phenomenon occurs over the time $t$ in which it occurs: $f\; =\; n\; /\; t$.

* The frequency of the musical note A above middle C is 440 oscillations per second.

* ''The frequency of a wave is its velocity $v$ divided by its wavelength $\backslash lambda$: $f\; =\; v\; /\; \backslash lambda$.

* Broadcasting live at a frequency of 98.3 megahertz, we’re your rock alternative!

* The frequency for electric power in the Americas is generally 60 Hz rather than 50.

(statistics) number of times an event occurred in an experiment (absolute frequency)