pertinaciously

This brought up all the unsettled claims which had been so pertinaciously enforced and so firmly resisted.

The theory, so pertinaciously put forward by Max Mller, was that myths originated from a subsequent misunderstanding of words.

Neither tortoise nor caïman paid any attention to their presence, but fought on pertinaciously.

The story is told of a seaman who thrust his head out of one of the shot-holes, and pertinaciously kept it there.

Enistor had watched and waited pertinaciously, and had little difficulty in getting on the track.