Dreaming of the letter Z means you are being held back, and not achieving your full potential. You are seen as a lazy person who always takes the easy way out or abandoning your responsibilities completely. This habitually leaves you in last place in contests or races. End the loser cycle and start dreaming of the letter A.
The letter Z can signify an ending, closure or in some cases an intense ending of a dream. It may also symbolize that we have come to the end of something and all we have left is to put our signature on it.
Lastly, the letter Z in a dream represents that you are caring too much about what others think and what they say. You are looking to them for their response before you decide on your own conclusions. You need to be assertive and make decisions for yourself.