strenuous

His body has endured harsh heat and constant strenuous activity.

Endorphins are released during sex, just as they are during a strenuous workout.

But a glitch has the video stuck in permaload mode and my patience is running thin after that strenuous hour of “math”.

Socratic dialogue during strenuous exercise: take that, effete philosophers!

She saw women carrying firewood, and how long it took, how strenuous, and the effect it was having on their health.

A strenuous worker, Mr. Johnstone, like most men who have no hobby, did not long survive his retirement from active business life.

The strenuous efforts made by the Spaniards to secure their release are fully referred to in Chap.

Christianity has been for fifteen hundred years the religion of the brilliant, brave, and strenuous races in the world.

Philip Livingston, a signer and a strenuous advocate for the declaration of independence, died.

That is, Gaston greatly desired it; but this desire yielded to his wife's strenuous opposition.