Related Clues:

• Dependable, unwavering
• Resigned from Saint Osyth's -- originally in charge
• Like a cold gaze
• Phlegmatic type’s standing briefly recognised around India
• Firm dates rotting quickly
• Gimlet-eyed
• Bold and loud, not able to listen?
• Zeno, for one
• Philosopher thus keeps almost closed
• Imperturbable person
• Cool sort in trips to Iceland
• Impassive person
• Cool type in expeditions to iceberg
• Cool selection of cakes to ice
• Phlegmatic type almost shut in thus