But he was beyond anger now and into a quiet rage that manifested itself in a deceptively calm demeanour.

It requires a bowler with a strong mind, a calm demeanour and a quick understanding of what is required.

If so, maintaining a calm demeanour could be your biggest challenge.

He is remembered by colleagues as being unflappable in theatre with a calm demeanour that soothed any histrionics.

Successful haggling requires the calm demeanour of the poker player.