The clue is related to the crossword title
The Clue in the Crossword Cipher was created in 1967.
The crossword clue for the Welsh rabbit is the hare.
From this context, I'm guessing that this question is in relation to a crossword clue. Dollars to doughnuts, the answer is CIA. One other possible correct answer is KGB.
The ISBN of The Clue in the Crossword Cipher is 0-448-09544-0.
If this is a crossword clue, your answer is 'señor'.
stern
agin
cost
eats
shirt
To get crossword puzzle answers you look at the numbered clues and find out what they mean and what matchs the clue then you put your answer to the clue in its numbered space