Completion and Sill

Completion

Completion noun - A concluding action.

Sill is an antonym for completion.

Sill

Sill noun - Structural member consisting of a continuous horizontal timber forming the lowest member of a framework or supporting structure.
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Synonyms for Sill

Completion is an antonym for sill in opening topic.

Nearby Words: siller, Silling
Cite this Source
Sill and Completion. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/completion/sill
Completion & Sill. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/completion/sill>.
Sill or Completion. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/completion/sill.
Google Ngram Viewer shows how "completion" and "sill" have occurred on timeline