noun
a pain in or around a tooth
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I am experiencing a severe toothache and need to see a dentist as soon as possible.
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Ouch, my tooth is killing me with this toothache. I should probably make a dentist appointment.
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My toothache is driving me nuts, I can't deal with this pain anymore.
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Dealing with this project is like having a constant toothache, it's a persistent source of discomfort.