Topping up
Top up and topping up are semantically related. In some cases you can use "Top up" instead a verb phrase "Topping up".
Top up
Topping up and top up are semantically related. Sometimes you can replace phrase "Topping up" with "Top up", this terms are similar.
Mutual synonyms
Cite this Source
Top up and Topping up. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/topping_up/top_up
Topping up & Top up. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/topping_up/top_up>.
Top up or Topping up. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/topping_up/top_up.
Google Ngram Viewer shows how "topping up" and "top up" have occurred on timeline