지치지 않고 꾸준하게 노력하거나 행동하는 모양.
With great effort, energy, or persistence, and without becoming tired or stopping.
예문:
"The volunteers worked tirelessly throughout the night to distribute food to the flood victims."
"She campaigned tirelessly for human rights, attending hundreds of rallies over the decade."
"The research team has been tirelessly searching for a cure for the rare disease."