repeatedly, regularly, periodically, habitually
The best synonym is probably "often." While Halley's comet *regularly* comes within the Earth's view (every 70-odd years), it does not do so "frequently" (often).
Frequently these words are considered as synonyms.
"Frequent" and "often" are synonyms, as they both convey the idea of something happening frequently or regularly. They are not antonyms or homophones.
SYNONYMS
Synonyms for loop are cycle or repetition.
Usually is another word for commonly. Additional synonyms include frequently, generally and ordinarily.
In English (synonyms): I frequent this establishment. I regularly attend XXXX. In Spanish: suelo visitar (I am in the habit of visiting)
They are synonyms.
Synonyms
Relative and kin are synonyms.
They are synonyms.
synonyms
Are there synonyms for washable