Interminable and Periodical

Interminable

Interminable adjective - Tiresomely long; seemingly without end.

Periodical is an antonym for interminable.

Nearby Word: interminably

Periodical

Periodical adjective - Occurring or appearing at intervals.
Usage example: periodical announcements from airline personnel concerning the delay

Interminable is an antonym for periodical.

Cite this Source
Periodical and Interminable. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/interminable/periodical
Interminable & Periodical. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/interminable/periodical>.
Periodical or Interminable. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/interminable/periodical.
Google Ngram Viewer shows how "interminable" and "periodical" have occurred on timeline