Extension
Extension noun - The act of making longer.
Topping up and extension are semantically related. In some cases you can use "Topping up" instead a noun "Extension".
Topping up
Extension and topping up are semantically related. Sometimes you can use "Extension" instead a noun phrase "Topping up".
Mutual synonyms
Cite this Source
Topping up and Extension. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/extension/topping_up
Extension & Topping up. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/extension/topping_up>.
Topping up or Extension. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/extension/topping_up.
Google Ngram Viewer shows how "extension" and "topping up" have occurred on timeline