Plug up
Plug up verb - To prevent passage through by filling with something.
Plug
Plug verb - To close up so that no empty spaces remain.
Mutual synonyms
Cite this Source
Plug and Plug up. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/plug_up/plug
Plug up & Plug. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/plug_up/plug>.
Plug or Plug up. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/plug_up/plug.
Google Ngram Viewer shows how "plug up" and "plug" have occurred on timeline