Some of the younger men didn't understand the connection between physical fitness and mental acuity, but he did.

"If it doesn't require any rare skills or mental acuity."

This is the level of mental acuity I osess at the moment.

He is described as an intellectual with sharp mental acuity.

He was always physically fit which assisted him in his mental acuity.

And in this play, particularly, your mental acuity must also be at its best.

The matter of his mental acuity is a delicate one.

But at the moment he lacked the mental acuity to debate the issue.

Men can further maintain their mental acuity by engaging in intellectual activities.

I see that you, like they, question my remaining mental acuity.