Be immune
Fall behind and be immune are semantically related. In some cases you can use "Fall behind" instead a verb phrase "Be immune".
Fall behind
Fall behind verb - Hang (back) or fall (behind) in movement, progress, development, etc..
Be immune and fall behind are semantically related. Sometimes you can use "Be immune" instead a verb "Fall behind".
Cite this Source
Fall behind and Be immune. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/be_immune/fall_behind
Be immune & Fall behind. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/be_immune/fall_behind>.
Fall behind or Be immune. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/be_immune/fall_behind.
Google Ngram Viewer shows how "be immune" and "fall behind" have occurred on timeline