Informal
Informal adjective - Not rigidly following established form, custom, or rules.
On impulse and informal are semantically related In some cases you can use "On impulse" instead an adjective "Informal".
On impulse
Informal and on impulse are semantically related in extemporaneous topic. You can use "Informal" instead an adjective phrase "On impulse", if it concerns topics such as unrehearsed, improvised.
Mutual synonyms
Cite this Source
On impulse and Informal. (2016). Retrieved 2026, July 28, from https://thesaurus.plus/related/informal/on_impulse
Informal & On impulse. N.p., 2016. Web. 28 Jul. 2026. <https://thesaurus.plus/related/informal/on_impulse>.
On impulse or Informal. 2016. Accessed July 28, 2026. https://thesaurus.plus/related/informal/on_impulse.
Google Ngram Viewer shows how "informal" and "on impulse" have occurred on timeline