Definitely vs. Definitively — What's the Difference?
By Tayyaba Rehman — Updated on October 3, 2023
Definitely is an adverb meaning "without doubt" or "certainly," while definitively is an adverb suggesting a final, absolute, or authoritative conclusion.
Difference Between Definitely and Definitively
Table of Contents
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Key Differences
Definitely and definitively are both adverbs, but they hold unique nuances in their meanings. "Definitely" is employed to express certainty or to emphasize the affirmative. For example, if one is sure about attending an event, they might say, "I will definitely be there."
On the other hand, "definitively" conveys a sense of conclusiveness or finality. If a scientist proves a theory beyond any doubt, they have "definitively" proven it. The essence of "definitely" leans more towards the affirmation of something being true or set to happen.
In contrast, "definitively" leans towards an absolute or ultimate conclusion about something. The former is about assuredness, while the latter is about conclusiveness. Therefore, while there is a subtle difference between these two adverbs, understanding the context in which they are used can help in distinguishing their intended meaning.
Comparison Chart
Primary Meaning
Without doubt or certainly
In a final, absolute manner
Usage
Expressing certainty
Expressing conclusiveness
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Nuance
Affirmation
Ultimate conclusion
Example
"She will definitely come."
"The issue was resolved definitively."
Common Misuse
Sometimes overused for emphasis
Occasionally used in place of "definitely" incorrectly
Compare with Definitions
Definitely
Used for emphasis or to express agreement.
That was definitely a great movie.
Definitively
With authority or decisiveness.
The leader spoke definitively on the matter.
Definitely
Without any doubt.
I am definitely attending the concert.
Definitively
Absolute or ultimate.
It was a definitively historic moment for the country.
Definitely
Absolutely or positively.
I will definitely call you tomorrow.
Definitively
In a manner leaving no doubt.
The records were definitively accurate.
Definitely
Certain or sure about something.
She's definitely the right person for the job.
Definitively
Serving to define or identify as distinct from others
"The Enlightenment pushed this project further trying to make science and its hallmark method definitive of the rational life" (Peter Machamer).
Definitely
Clearly defined; explicitly precise
A definite statement of the terms of the will.
Definitively
Supplying or being a final settlement or decision; conclusive
"The fall of the city Constantine had founded marked the definitive end of the Christian Eastern Empire" (James Carroll).
Definitely
Forthright and unambiguous
The doctor was very definite about what foods you should avoid.
Definitively
Authoritative and complete
A definitive biography. See Usage Note at definite.
Definitely
Clearly developed or firmly decided
No definite idea of what to do for a career.
Definitively
Mass produced in indefinite quantities over an indefinite period of time. Used of postage stamps.
Definitely
Readily distinguished or certain
At a definite disadvantage.
Definitively
(Biology) Fully formed or developed, as an organ or structure.
Definitely
(Grammar) Limiting or particularizing.
Definitively
(Grammar) A word that defines or limits, such as the definite article or a demonstrative pronoun.
Definitely
Of a fixed number usually less than 20, as certain floral organs, especially stamens.
Definitively
A definitive postage stamp.
Definitely
Cymose; determinate.
Definitively
In a way that is not only decisive, but also conclusive and final.
Definitely
Without question and beyond doubt.
Joe definitely doesn't know how to drive a tractor.
She said she wasn't coming, definitely.
Definitively
In a definitive manner.
Definitely
In a definite manner; decisively.
Definitively
In a way that finally and conclusively settles something.
The experiment definitively proved the hypothesis.
Definitely
In a definite manner; with precision; precisely; determinately.
Definitively
In a manner that provides a definitive solution.
The software was definitively better than its competitors.
Definitely
Without question and beyond doubt;
It was decidedly too expensive
She told him off in spades
By all odds they should win
Definitely
In a clear and definite manner; unmistakably.
The colors of the painting were definitely vibrant.
Common Curiosities
Which is more commonly used: definitely or definitively?
"Definitely" is more commonly used in everyday language.
Do definitely and definitively mean the same thing?
No, "definitely" means "without doubt" while "definitively" suggests a final or authoritative conclusion.
How can I remember the difference between the two?
Think of "definitely" for certainty and "definitively" for finality or conclusiveness.
Are they both adverbs?
Yes, both words are adverbs.
Can I use definitively in place of definitely?
Not always. They have distinct nuances, so context is crucial.
Can "definitively" be used to describe final decisions?
Yes, "definitively" can be used to describe decisions made with finality.
Is "I am definitively coming" correct?
While grammatically correct, "definitely" would be more appropriate in this context.
In what contexts is "definitely" most often used?
It's commonly used in informal communication to express certainty or agreement.
Why might someone use "definitively" over "definitely"?
They might use "definitively" to emphasize the conclusiveness or finality of a statement or action.
Which word is older in origin?
Both words derive from the Latin word "definitivus," but "definitely" appeared earlier in English.
Is "definitively" often used in scientific contexts?
Yes, because it can emphasize the conclusive proof or outcome of something.
Can "definitely" be used to agree with someone?
Yes, it can be used for emphasis or to express agreement, e.g., "I definitely agree!"
Does "definitively" always suggest an end point?
Generally, it indicates a conclusive or final nature to something.
Is it common for people to misuse these words?
Yes, sometimes people use "definitively" when "definitely" would be more appropriate, and vice versa.
How can I avoid misusing these words?
Always consider the context: "definitely" for certainty and "definitively" for conclusiveness.
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Written by
Tayyaba RehmanTayyaba Rehman is a distinguished writer, currently serving as a primary contributor to askdifference.com. As a researcher in semantics and etymology, Tayyaba's passion for the complexity of languages and their distinctions has found a perfect home on the platform. Tayyaba delves into the intricacies of language, distinguishing between commonly confused words and phrases, thereby providing clarity for readers worldwide.
