Related Clues:

• Adamant ant?
• Thorn in one's side
• Annoyer
• Stupid person
• Aphid, to a gardener
• Nerdy type
• Exterminator's target
• Termite, e.g.
• Pip-squeak
• Destructive insect
• Silly sort
• Vexatious sort
• Insignificant one
• Punk
• Irksome sort