Define this!

The handy dandy Brain Bender from the discount MENSA calendar.

Ready to play?

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The five words below can be defined by words that begin with the same two letters (for each definition). Can you fill in all five?

• Feverish = __________
• Part of a car = __________
• Catlike = ___________
• A particular artery = __________
• Irresponsible = __________

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Alrighty, you know how this works. The answers will be found later in the comments. See you then!