This is the 192nd most frequent Ukrainian word.
тоді
"Тоді" means "then" in English.
It is used here as a logical conjunction meaning 'then' in a conditional statement.
Якщо ти зайнятий зараз, тоді ми можемо зустрітися завтра.
If you are busy now, then we can meet tomorrow.
In this sentence, 'тоді' is used to indicate a specific point in time in the past.
Я ще жив у тому місті тоді.
I still lived in that city at that time.
Here, it indicates a period or moment categorically linked to the preceding context.