Как ограничить свободу пользователя :)

import tkinter
import random
 
# >>>словарь слов<<<
d = {'кот': 'cat', 'собака': 'dog', 'слон': 'elephant', 'машина': 'car', 'дерево': 'three', 'дом': 'house'}
r = random.choice(list(d.keys()))
 
# >>>окно<<<
window = tkinter.Tk()
window.geometry('200x190')  
 
# >>>счетчик попыток<<<
counter = tkinter.IntVar()  # IntVar 
counter.set(3)  
 
# >>>контроллеры для кнопок 'Проверка' и 'Выход'<<<
def click():
    answer = d.get(r)
    if entry.get() == answer:
        result = 'Верно!'
        label_result.config(text=result)
    elif entry.get() != answer:
        result = 'Не верно!'
        label_result.config(text=result)
        counter.set(counter.get() - 1)  # счетчик -1
        if counter.get() == 0:
            result = 'Попытки исчерпаны'
            label_result.config(text=result)
 
def quit():
    window.quit()
 
# >>>фреймы<<<
frame_name = tkinter.Frame(window)
frame_name.pack()
frame_question = tkinter.Frame(window)
frame_question.pack()
frame_eng = tkinter.Frame(window)
frame_eng.pack()
frame_result = tkinter.Frame(window)
frame_result.pack()
frame_pop = tkinter.Frame(window)
frame_pop.pack()
frame_counter = tkinter.Frame(window)
frame_counter.pack()
frame_butn = tkinter.Frame(window)
frame_butn.pack()
frame_quit = tkinter.Frame(window)
frame_quit.pack()
 
# >>>виджеты<<<
label_name = tkinter.Label(frame_name, text='Угадай слово на английском:')
label_name.pack()
label_question = tkinter.Label(frame_question, text=r)
label_question.pack()
entry = tkinter.Entry(frame_eng)
entry.pack()
label_result = tkinter.Label(frame_result)
label_result.pack()
label_pop = tkinter.Label(frame_pop, text='попыток осталось:')
label_pop.pack()
label_counter = tkinter.Label(frame_counter, textvariable=counter)
label_counter.pack()
 
# >>>кнопки<<<
button = tkinter.Button(frame_butn, text='Проверка', command=click, background="#555", foreground="#ccc")
button.pack()
button = tkinter.Button(frame_quit, text='Выход', command=quit, background="#555", foreground="#ccc")
button.pack()
 
window.mainloop()

button_check['state'] = 'disabled'