Impromptu
Impromptu adverb - Without advance preparation.
Without thinking and impromptu are semantically related. In some cases you can use "Without thinking" instead an adverb "Impromptu".
Without thinking
Impromptu and without thinking are semantically related. Sometimes you can use "Impromptu" instead an adverb phrase "Without thinking".
Cite this Source
Without thinking and Impromptu. (2016). Retrieved 2026, July 31, from https://thesaurus.plus/related/impromptu/without_thinking
Impromptu & Without thinking. N.p., 2016. Web. 31 Jul. 2026. <https://thesaurus.plus/related/impromptu/without_thinking>.
Without thinking or Impromptu. 2016. Accessed July 31, 2026. https://thesaurus.plus/related/impromptu/without_thinking.
Google Ngram Viewer shows how "impromptu" and "without thinking" have occurred on timeline