This is the 3141st most frequent Dutch word.
effectiever
More effective.
Here, 'effectiever' acts as a comparative adverb to describe how 'he' performs work given the condition of having clear instructions.
Hij werkt effectiever met duidelijke instructies.
He works more effectively with clear instructions.
The word 'effectiever' is used here as a comparative form of the adjective 'effectief' (effective) to describe how work can be performed more effectively.
Met deze strategie wordt ons werk effectiever.
With this strategy, our work becomes more effective.
In this sentence, 'effectievere' is an attributive comparative adjective modifying the noun 'aanpak' (approach), suggesting the need for a better approach.