Heedlessly
Heedlessly adverb - Without care or concern.
Impromptu and heedlessly are semantically related. In some cases you can use "Impromptu" instead an adverb "Heedlessly".
Impromptu
Impromptu adverb - Without advance preparation.
Heedlessly and impromptu are semantically related. Sometimes you can use "Heedlessly" instead an adverb "Impromptu".
Mutual synonyms
Cite this Source
Impromptu and Heedlessly. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/heedlessly/impromptu
Heedlessly & Impromptu. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/heedlessly/impromptu>.
Impromptu or Heedlessly. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/heedlessly/impromptu.
Google Ngram Viewer shows how "heedlessly" and "impromptu" have occurred on timeline