Simple and Watchful

Simple

Simple adjective - Lacking in worldly wisdom or informed judgment.
Usage example: developers mistakenly thought that the local residents were simple people who would sell their land for practically nothing

Watchful is an antonym for simple.

Watchful

Watchful adjective - Paying close attention usually for the purpose of anticipating approaching danger or opportunity.

Simple is an antonym for watchful.

Cite this Source
Watchful and Simple. (2016). Retrieved 2026, August 07, from https://thesaurus.plus/related/simple/watchful
Simple & Watchful. N.p., 2016. Web. 07 Aug. 2026. <https://thesaurus.plus/related/simple/watchful>.
Watchful or Simple. 2016. Accessed August 07, 2026. https://thesaurus.plus/related/simple/watchful.
Google Ngram Viewer shows how "simple" and "watchful" have occurred on timeline