Lest
So that and lest are semantically related. in for fear that topic. In some cases you can use "So that" instead a conjunction "Lest".
So that
Mutual synonyms
Both terms in one sentence
- She's presented as a serious threat on her own, so much so that V himself feels he needs to put her out of commission for good, lest his own plans be ruined.
Source: Females Are More Innocent -
Later in the book a horse is tethered so that it can get to some grain and water, but not to a hay pile lest it eat itself to death.
Source: Automaton Horses - Shizuru even jokes about deciding not to graduate so that she can stay behind with Natsuki, who must do make-up work lest she be forced to repeat a year.
Source: Graduate from the Story
Cite this Source
So that and Lest. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/lest/so_that
Lest & So that. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/lest/so_that>.
So that or Lest. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/lest/so_that.
Google Ngram Viewer shows how "lest" and "so that" have occurred on timeline