External and Observable

External

External adjective - Not being a vital part of or belonging to something.

Observable and external are semantically related. In some cases you can use "Observable" instead an adjective "External".

Observable

Observable adjective - Capable of being seen.
Usage example: scientists often work with phenomena that are not directly observable

External and observable are semantically related. Sometimes you can use "External" instead an adjective "Observable".

Both words in one sentence

  • Life Imitates Art Dale Brown predicted low-observable external weapons pods well before Boeing made it possible.
Cite this Source
Observable and External. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/external/observable
External & Observable. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/external/observable>.
Observable or External. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/external/observable.
Google Ngram Viewer shows how "external" and "observable" have occurred on timeline