Lock
Lock noun - One that is certain to succeed.
Mutual synonyms
Cite this Source
Popper and Lock. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/lock/popper
Lock & Popper. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/lock/popper>.
Popper or Lock. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/lock/popper.
Google Ngram Viewer shows how "lock" and "popper" have occurred on timeline