Breakthrough and Declension
Opposite meaning words
Breakthrough
Breakthrough noun - An instance of notable progress in the development of knowledge, technology, or skill.
Usage example: Alexander Fleming's discovery of penicillin was one of medicine's great breakthroughs, for penicillin became the first antibiotic to successfully combat bacterial infections in humans
Declension is an antonym for breakthrough.
Declension
Declension noun - A gradual sinking and wasting away of mind or body.
Breakthrough is an antonym for declension.
Nearby Word: declensional
Cite this Source
Declension and Breakthrough. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/breakthrough/declension
Breakthrough & Declension. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/breakthrough/declension>.
Declension or Breakthrough. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/breakthrough/declension.
Google Ngram Viewer shows how "breakthrough" and "declension" have occurred on timeline