Related Clues:

• Adamant ant?
• Problem
• Thorn in one's side
• Annoyer
• Stupid person
• Aphid, to a gardener
• Exterminator's target
• Termite, e.g.
• Destructive insect
• Silly sort
• Vexatious sort
• Silly fool
• Foolish sort
• Irksome sort
• Movie preview