Lock
Lock noun - One that is certain to succeed.
Zipper
Zipper noun - A fastener for locking together two toothed edges by means of a sliding tab.
Mutual synonyms
Both words in one sentence
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And again in the Star Trek: Enterprise two-part episode "Demons/Terra Prime", when Trip picks a futuretech lock using his zipper and belt buckle.
Source: MacGyvering
Cite this Source
Zipper and Lock. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/lock/zipper
Lock & Zipper. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/lock/zipper>.
Zipper or Lock. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/lock/zipper.
Google Ngram Viewer shows how "lock" and "zipper" have occurred on timeline