From the given options, choose the one which is opposite in meaning to the given word.

Shallow

Deep

The correct answer is Option 4: Deep

Shallow means having little depth — for example, shallow water doesn't go very far down.

The opposite of shallow is deep, which means going far down from the surface. So, shallow vs. deep are antonyms.

Other options like high, long, and wide relate to different dimensions and are not opposite in meaning to "shallow".