Definitely
Definitely adverb - Without any question.
Without fail is a synonym for definitely in certainly topic. In some cases you can use "Without fail" instead an adverb "Definitely", when it comes to topics like of course, easily.
Without fail
Definitely is a synonym for without fail in of course topic. You can use "Definitely" instead an adverb phrase "Without fail", if it concerns topics such as agreed, yes, without doubt, without a doubt.
Mutual synonyms
Related pairs
- absolutely and definitely
- absolutely and without fail
- positively and definitely
- positively and without fail
- plainly and definitely
- plainly and without fail
- certainly and definitely
- certainly and without fail
- easily and definitely
- easily and without fail
- clearly and definitely
- clearly and without fail
- doubtless and definitely
- doubtless and without fail
Cite this Source
Without fail and Definitely. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/definitely/without_fail
Definitely & Without fail. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/definitely/without_fail>.
Without fail or Definitely. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/definitely/without_fail.
Google Ngram Viewer shows how "definitely" and "without fail" have occurred on timeline