0 determined, brave, and unwilling ever to stop trying to achieve something:
She has been for many years a doughty campaigner for women's rights.
It is here especially that the book takes on a tinge of hagiography, and the author puts up a doughty defence of the alleged shortcomings of the government.
All are splendid and doughty fighters for our liberties.
Unfortunately, he lost that fight, but his successor will no doubt prove an equally doughty fighter—perhaps over the commuter train services to which he referred.
He has been an extraordinarily doughty fighter in the warm homes group, which owes him a considerable debt of gratitude.
She has been a doughty campaigner for her constituency.
He is an assiduous researcher and a doughty campaigner.
They cannot have a more doughty champion than him.
He is known as a warrior for the 11-plus and a doughty opponent of the comprehensive principle.
