def is_word_guessed(secret_word, guessed_letters):
  """ check whether the secret_word has been completely guessed correctly or not.

  Arguments:
    secret_word (string): the secret, random word that the player should guess
    guessed_letters (list of strings): a list that contains all the valid inputs that the player has ever entered 
  
  Returns:
    boolean: True if the secret_word has been completely guessed; False otherwise.
  """
 
  for i in secret_word:
    found = False 
    for j in guessed_letters:
      if i == j: 
        found = True
    if not found: 
      return False  

  return True