This is the 195th most frequent Ukrainian word.
повинні
"Повинні" means "must" or "have to" in English.
Here, 'повинні' expresses necessity or obligation.
Ми повинні закінчити проект до завтра.
We need to finish the project by tomorrow.
In this sentence, 'повинні' indicates past obligation that was not fulfilled.
Вони повинні були піти раніше, але залишилися.
They should have left earlier, but they stayed.
Here, 'повинні' implies considering obligation or necessity in a questioning context.