Indefinite frequency

From Teflpedia

Indefinite frequency (/ɪnˈdefənət ˈfri:kwənsi/) is a type of frequency that is the number of occurrences of something is within a period of indefinite time.

Contrast definite frequency.

In English, indefinite frequency is described using adverbs called indefinite frequency adverbs such as "often", "usually" and "never".