What Alice, waiting for a reply, was faced with was a sudden howl. It was a resounding noise, sharp as to burst her ear drums, loud as to reach unto the heavens.

I am touched by the girl's acute sensitivity.

I have a good sense of smell.

Hounds hunt by their keen scent.

I met a keen-eyed guy.

She's a good photographer because she's so observant.

She is a lady of business acumen.

He has sharp hearing.

He has an acute sense of observation.

His observation is sharp, but he says very little.

He was aware of a sharp pain.

His sharp eyes never missed a mistake.

All at once, I heard a shrill cry.

All of a sudden, we heard the sharp cry of a cat.

Birds have sharp eyes.

The hawk has piercing eyes.

I've got a keen-edged knife.

I felt a sharp pain in my stomach all of a sudden.

My knife has such a fine edge.

I was walking along the crowded street when all at once I heard a shrill cry.