Exploratory and Preliminary

Exploratory

Exploratory adjective - Serving in or intended for exploration or discovery.
Usage example: exploratory reconnaissance

Preliminary is a synonym for exploratory in experimental topic. In some cases you can use "Preliminary" instead an adjective "Exploratory". popular alternative

Preliminary

Preliminary adjective - Denoting an action or event preceding or in preparation for something more important; designed to orient or acquaint with a situation before proceeding.
Usage example: a preliminary investigation

Exploratory is a synonym for preliminary in first topic. You can use "Exploratory" instead an adjective "Preliminary", if it concerns topics such as early, introductory. popular alternative
Cite this Source
Preliminary and Exploratory. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/exploratory/preliminary
Exploratory & Preliminary. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/exploratory/preliminary>.
Preliminary or Exploratory. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/exploratory/preliminary.
Google Ngram Viewer shows how "exploratory" and "preliminary" have occurred on timeline