By surprise
Unwatchful and by surprise are semantically related. In some cases you can use "Unwatchful" instead an adverb phrase "By surprise".
Unwatchful
Unwatchful adjective - Not alert to what is potentially dangerous.
By surprise and unwatchful are semantically related. Sometimes you can use "By surprise" instead an adverb "Unwatchful".
Mutual synonyms
Cite this Source
Unwatchful and By surprise. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/by_surprise/unwatchful
By surprise & Unwatchful. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/by_surprise/unwatchful>.
Unwatchful or By surprise. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/by_surprise/unwatchful.
Google Ngram Viewer shows how "by surprise" and "unwatchful" have occurred on timeline