This is the 13481st most frequent Russian word.
напрасно
"Напрасно" means "in vain" or "without reason."
Used to indicate that worrying is without reason or unnecessary.
Ты напрасно беспокоишься.
You worry unnecessarily.
Used to describe that time was spent without achieving any desired result.
Я потратил время напрасно.
I spent time in vain.
Adjective form to describe an effort as ineffective or leading to no result.