Why does my for loop run indefinitely and doesn't stop when the if condition is met?

I’m trying to read text from a file and using a loop to find a specific text from the file. The data in the file is listed vertically word by word.
When I run the script, after it prints the last word in the file it repeats itself from the beginning indefinitely.

with open('dictionary.txt','r') as file:
    dictionary = file.read().strip()
for i in dictionary:
 print (dictionary)
 if( i == "ffff" ):
    break

>Solution :

first split the lines by "\n" then print(i) not print(dictionary):

with open('dictionary.txt', 'r') as file:
    dictionary = file.read().strip().split("\n")
for i in dictionary:
    print(i)
    if i == "ffff":
        break