Possible Clues:

• Emotionless type of humor
• University administrator accepts notice quietly and without expression
• Aped Dan to become expressionless (4, 3)
• Without facial expression, like poker player
• Departed vessel, showing no emotion
• Without facial expression
• Expressionless like moribund utensil
• With expressionless face
• Expressionless (face)
• Without 1 across the god is no more