Impromptu
Impromptu adverb - Without advance preparation.
Without checking and impromptu are semantically related. In some cases you can use "Without checking" instead an adverb "Impromptu".
Without checking
Impromptu and without checking are semantically related. You can use "Impromptu" instead an adverb phrase "Without checking".
Mutual synonyms
Cite this Source
Without checking and Impromptu. (2016). Retrieved 2026, August 03, from https://thesaurus.plus/related/impromptu/without_checking
Impromptu & Without checking. N.p., 2016. Web. 03 Aug. 2026. <https://thesaurus.plus/related/impromptu/without_checking>.
Without checking or Impromptu. 2016. Accessed August 03, 2026. https://thesaurus.plus/related/impromptu/without_checking.
Google Ngram Viewer shows how "impromptu" and "without checking" have occurred on timeline