Flare up
Flare up verb - To develop suddenly and violently.
Usage example: her cold sores flared up again when she got the flu
Touch off and flare up are semantically related in give forth topic. In some cases you can use "Touch off" instead a verb "Flare up", when it comes to topics like set on fire.
Touch off
Touch off verb - To cause to function.
Flare up and touch off are semantically related in burn topic. Sometimes you can use "Flare up" instead a verb "Touch off", if it concerns topics such as give forth, appear, set on fire.
Mutual synonyms
Cite this Source
Touch off and Flare up. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/flare_up/touch_off
Flare up & Touch off. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/flare_up/touch_off>.
Touch off or Flare up. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/flare_up/touch_off.
Google Ngram Viewer shows how "flare up" and "touch off" have occurred on timeline