For each word listed, try to guess the word that shares the MOST letters from the beginning of the word.
For instance, the word "ROADBED" shares the letters "ROADB" with "ROADBLOCK", which would be the correct answer.
Conjugation, plurals, and other derivations of the given word do NOT count.
The Z answer was on the tip of my tongue, but I was a bit off. I question the credibility of the bull answer since it feels like you could make any portmandeau, but I guess it works.