lengthy

If it had been on the rotation of my crops, I would have answered myself, lengthily perhaps, but certainly con gusto.

Never before in his life had Mark spoken so eloquently nor so lengthily.

He lengthily accused Grousset of having stolen paper in order to print his journal; another of having lived with a mistress.

In any case, it is the one which has been the most perseveringly, lengthily and carefully studied by highly competent men.