How to stop a block of code from happening once an incorrect key is pressed

So I have this block of code if the user types what's on screen correctly.

words = ["Games","Development","Keyboard","Speed","Typer","Anything","Alpha","Zealous","Accurate","Basics","Shortcut","Purpose","Window","Counter","Fortress","Modification","Computer","Science","History","Football","Basketball","Solid","Phantom","Battlefield","Advanced","Warfare","Download","Upload","Antidisestablishmentarianism","Supercalifragilisticexpialidocious","Discomobobulation","Liberated","Assassin","Brotherhood","Revelation","Unity","Syndicate","Victory"]
wordcount = 0
maxwords = 12        
skips = 0

def nextWord():
        global score
        global wordcount
        global skips
        global maxwords
        global name
        global high_score

        entry.focus_set()

        if entry.get().lower() == words[1].lower():
            score += 1
            wordcount += 1
            wordcounter.config(text="Words: " + str(wordcount))

And I'd like to know how to stop this block of code from running if they don't type what's on the screen:

        for i in range(maxwords):
            entry.delete(0, tkinter.END)
            random.shuffle(words)
            label.config(text=str(words[1]))
            scoreLabel.config(text="Time: " + str(score)+ "s")

It continues even if they don't type it correctly because of:

def startGame(event):
    nextWord()

root.bind("<Return>", startGame)

I currently have this:

    elif entry.get().lower() != words[1].lower():
            wronglabel.config(text="WRONG!")
            time.sleep(0.6)
            wronglabel.delete(0, tkinter.END)

What this currently does is make

wronglabel = tkinter.Label(root, text="", font =("Helvetica, 14"))
wronglabel.pack()

Say wrong but I'd like to know how to make it not randomly shuffle and get items from the list if they user does not enter the correct word. Thanks.