Definitely and Undoubtedly

Similar meaning words

Definitely adverb - Without any question.

Usage example: that is definitely the kind of dog we're looking to adopt

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Undoubtedly is a synonym for definitely in certainly topic. In some cases you can use "Undoubtedly" instead an adverb "Definitely", when it comes to topics like positively, undeniably, surely. popular alternative

Undoubtedly adverb - Without any question.

Usage example: we will undoubtedly have to do some editing of our home video

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Definitely is a synonym for undoubtedly in certainly topic. You can use "Definitely" instead an adverb "Undoubtedly", if it concerns topics such as positively, undeniably, surely, decidedly. popular alternative

Nearby Word: undoubted

Even though most of the similarities were definitely not intentional, Rocko's Modern Life is undoubtedly this to Ren and Stimpy.

Source: Spiritual Antithesis
The "jerk" part is definitely shown in the barista scene, where he insults the barista who undoubtedly didn't come up with the names.

Source: Film / Role Models
Alice, while undoubtedly fueled by grief over her brother's death, never became obsessed with discovering the truth about how he died and definitely never attempted to summon his Niffin self.

Source: Series / The Magicians

Cite this Source

Undoubtedly and Definitely. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/definitely/undoubtedly

Definitely & Undoubtedly. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/definitely/undoubtedly>.

Undoubtedly or Definitely. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/definitely/undoubtedly.

Google Ngram Viewer shows how "definitely" and "undoubtedly" have occurred on timeline