definitive
The disease is very hard to diagnose definitively.
Evidence from his car and from both men showed definitively that Hedges was driving.
Drugs must be definitively proved safe before they're introduced.

SMART Vocabulary: related words and phrases

Certainty
(as) clear as dayidiom
(as) sure as eggs is eggsidiom
and that's flat!idiom
assure someone of something
assured
decidedly
deffo
definite
definitely
definitive
ironclad
irrefutable
irrefutably
make no mistake (about it)idiom
mistake
unreserved
unreservedly
watertight
would
you can bet your lifeidiom

Examples of definitively

definitively
Therefore, under the constitution the multiparty question is left to a future referendum and not definitively settled.
Therefore, the gap between empirical truth and absolute truth can never be definitively bridged, however hard we try.
This point must be settled definitively before one can interpret with confidence the findings from cases with a history of enucleation during infancy.
A non-factual mood used when the content of the clause is being doubted or supposed rather than definitively asserted.
Their systematic actions to these ends definitively puts paid to the idea that they were deliberately stoking the racial violence.
Despite this small, but overwhelmingly positive literature, few of the studies definitively recommend that these measures now be incorporated into routine health care policy.
The main issues of debate have been the need for university institutions definitively and explicitly to accept the responsibility for older adult education.
It is not crucial to distinguish definitively between residential and non-residential structures for the analysis that follows.
But it remains impossible to prove definitively that the round objects the players hold are made of rubber or any other material.
The three constitutive elements of physics are never definitively fixed or stabilized.
They are defined in terms of each other precisely because of the decision to credit the answers of smart people as being definitively normative.
Once the shock ends, real consumption reaches definitively a lower steady-state level.
There is a dogged durability to street-level practices and great difficulty in orchestrating change in whatever direction, whether fundamentally misguided or definitively correct.
The small number of test items (10 classifiers), however, is too small for pronouncing definitively on early classifier acquisition.
Almost relentlessly, the essay offers example after example like this to demonstrate, all but definitively, a habit of mind.
See all examples of definitively
These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.