Despite the long hike, she remained untired and helped set up camp.

Her untirable enthusiasm kept the team going through the toughest nights.

Her untiring enthusiasm kept the whole team motivated through the long project.

Her untireable curiosity drove her to explore every corner of the abandoned library.

She worked untiredly through the night to finish the project.

Her surprising untiredness after the long night left everyone wondering how she managed to stay so alert.