def is_every_letter_guessed(word, guesses):
    """Returns if every letter in the target word is accounted for in
    the user's guesses.
    """
    # It's easier to check the converse; are we missing anything?  Check
    # if any one of the letters in the target word *isn't* guessed.
    for letter in word:
        if letter not in guesses:
            # Found a letter in the word that hasn't been guessed yet!
            return False
    # If we've reached this point, the whole word has been gone over.
    # Not one of its letters was missing from the list of guesses.
    return True