Impulse
Impulse noun - Something that arouses action or activity.
Inconstancy and impulse are semantically related In some cases you can use "Inconstancy" instead a noun "Impulse".
Inconstancy
Inconstancy noun - Lack of faithfulness especially to one's husband or wife.
Impulse and inconstancy are semantically related in caprice topic. Sometimes you can use "Impulse" instead a noun "Inconstancy", if it concerns topics such as sudden change of behavior.
Cite this Source
Inconstancy and Impulse. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/impulse/inconstancy
Impulse & Inconstancy. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/impulse/inconstancy>.
Inconstancy or Impulse. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/impulse/inconstancy.
Google Ngram Viewer shows how "impulse" and "inconstancy" have occurred on timeline