Of long duration
Extending tediously beyond a standard duration
In the Senate there was a protracted struggle.
His pontificate was marked by protracted controversies with France and Portugal.
She recalled his long sad and severe look at those words and understood the meaning of the rebuke and despair in that protracted gaze.
If the enterprise were as heroic and commanding as it is protracted and unwearied!
A protracted controversy with Johann Hevelius, in which Hooke urged the advantages of telescopic over plain sights, brought him little but discredit.