grueling

He ran marathons and finished grueling Spartan Races.

So successful, in fact, that after six months of grueling and dangerous work, the decks of two vessels were so filled with drying sponges that there was little room left to move about.

Having just finished yet another grueling October campaign, they are bracing for the long road required to get back.

While Japan has produced globally recognized characters—from Super Mario, Pikachu to Hello Kitty—low wages and grueling working conditions have pushed many artists and developers to seek better opportunities abroad.

After wrapping up a grueling trip, one of Redick’s first thoughts was Jay-Z’s track “A Week Ago,” which begins with the lyric: “It was all good just a week ago.”