Fast
Fast adverb - With great speed.
Without warning and fast are semantically related. In some cases you can use "Without warning" instead the word "Fast" as an adjective or an adverb.
Without warning
Fast and without warning are semantically related. Sometimes you can use "Fast" instead the phrase "Without warning" as an adjective or an adverb.
Mutual synonyms
Related pairs
Both terms in one sentence
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Book a funeral, time for mourning Happened so fast without warning This peaceful bird's now a duck angel!
Source: Pooled Funds
Cite this Source
Without warning and Fast. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/fast/without_warning
Fast & Without warning. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/fast/without_warning>.
Without warning or Fast. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/fast/without_warning.
Google Ngram Viewer shows how "fast" and "without warning" have occurred on timeline