FALSE ADVERB
The Enigma
NPL Magazine
December, 2019

Most adverbs in English end in LY. The first answer word in this flat ends in LY, but it is not an adverb. The same four-letter word goes in both sets of blanks.

The _ _ _ _ LY out the pub door raced,
And in the alley knelt and _ _ _ _ ED.

Answer:

The missing word is BARF:

The BARFLY out of the pub door raced,
And in the alley knelt and BARFed