bright as a button
US /braɪt əz ə ˈbʌt.ən/
UK /braɪt əz ə ˈbʌt.ən/

1.
sangat cerdas, pintar sekali
very intelligent and quick-witted
:
•
Even at 90 years old, my grandmother is still bright as a button.
Bahkan di usia 90 tahun, nenek saya masih sangat cerdas.
•
The new intern is bright as a button and learns quickly.
Magang baru itu sangat cerdas dan belajar dengan cepat.
2.
segar bugar, ceria dan bersemangat
lively and cheerful
:
•
After a good night's sleep, she woke up bright as a button.
Setelah tidur nyenyak, dia bangun segar bugar.
•
Despite the long journey, the children were still bright as a button when they arrived.
Meskipun perjalanan panjang, anak-anak masih ceria dan bersemangat ketika mereka tiba.