This is the 9126th most frequent French word.
concluante
"Concluante" means "conclusive" in English.
The word 'concluante' is used here as an adjective to describe 'presentation' indicating that the arguments presented were persuasive or leading to a conclusion.
La présentation de ses arguments était très concluante.
The presentation of her arguments was very conclusive.
In this sentence, 'concluante' modifies 'enquête', showing that the investigation produced definitive results.
Une enquête concluante a révélé les véritables causes de l'accident.
A conclusive investigation revealed the true causes of the accident.
Here, 'concluante' is used negatively to imply that the strategy did not provide definitive or convincing success.