Related Clues:

• Yawning in class, say
• Fed up having made a hole
• Drilled (a hole)
• Robed (anag.)
• Weary; drilled
• Drilled a hole
• Drilled plank, say
• Unstimulated
• Lacking stimulation
• Drilled; fed up
• Disaffected
• Hardly absorbed
• Not at all engaged
• Palled on
• Made hole when fed up