Without fail
Without hesitation and without fail are semantically related. In some cases you can use "Without hesitation" instead an adverb phrase "Without fail".
Without hesitation
Without fail and without hesitation are semantically related. Sometimes you can use "Without fail" instead an adverb phrase "Without hesitation".
Mutual synonyms
Cite this Source
Without hesitation and Without fail. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/without_fail/without_hesitation
Without fail & Without hesitation. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/without_fail/without_hesitation>.
Without hesitation or Without fail. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/without_fail/without_hesitation.
Google Ngram Viewer shows how "without fail" and "without hesitation" have occurred on timeline