deep

Extending, reaching or positioned far from a point of reference, especially downwards.

The lake is extremely deep.

We hiked into a deep valley between tall mountains.

Extending, reaching or positioned far from a point of reference, especially downwards.

Diving down to deep wrecks can be dangerous.

I can't get the bullet out – it's too deep.

Extending, reaching or positioned far from a point of reference, especially downwards.

The shelves are 30 centimetres deep. — They are deep shelves.

That cyclist's deep chest allows him to draw more air.

Extending, reaching or positioned far from a point of reference, especially downwards.

The water was waist-deep.

There is an arm-deep hole in the wall.

Extending, reaching or positioned far from a point of reference, especially downwards.

a crowd four deep along the funeral procession, and people two deep on the sidewalks

Far, especially far down through something or into something, physically or figuratively.

The ogre lived in a cave deep underground.

We ventured deep into the forest.

In a profound, not superficial, manner.

I thought long and deep.

deep-laid

In large volume.

breathe deep, drink deep

A little Learning is a dang'rous Thing; / Drink deep, or taſte not the Pierian Spring:

Back towards one's own goal, baseline, or similar.

He's normally a midfield player, but today he's playing deep.

The deep part of a lake, sea, etc.

creatures of the deep

The sea, the ocean.

How few! yet how they creep / Through my fingers to the deep, / While I weep—while I weep! / O God! can I not grasp / Them with a tighter clasp?

A deep hole or pit, a water well; an abyss.

Deep calleth unto deep at the noise of thy waterfalls: All thy waves and thy billows are gone over me.

A deep or innermost part of something in general.

And what delights can equal those ⁠That stir the spirit’s inner deeps, ⁠When one that loves but knows not, reaps A truth from one that loves and knows?

A silent time; quiet isolation.

the deep of night