Bug up
Cross
Cross verb - To be unfaithful or disloyal to.
Cite this Source
Cross and Bug up. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/bug_up/cross
Bug up & Cross. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/bug_up/cross>.
Cross or Bug up. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/bug_up/cross.
Google Ngram Viewer shows how "bug up" and "cross" have occurred on timeline