periodically.

1. At recurring intervals.

2. From time to time without necessarily following an exact regular interval.

Use it for

Words that belong together

• periodically review
• periodically recur

On the page

The panel reviewed the procedure periodically under the agreed schedule.

The pattern recurred periodically during the observation period.

Usage notes

Primary category: academic / formal. Forms: Invariable adverb; use more or most only where natural. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings. Established modern English lexical item. No separate regional spelling or grammatical inflection entry. Writing functions: institutional and conceptual change, philosophical orientation, qualification of recurrence and degree. Disciplines: academic writing, philosophy, cross-disciplinary analysis. Commonness: moderately common.