Yawning

Her vivacity appeared as graceful as it was buoyant; her gay spirit seemed the musical overflowings of youth and happiness; her eye and cheek brightened together; and her sweet glad laugh was as catching as yawning.

yawning commuters

a yawning chasm; the shark's yawning jaws

That experience really taught me something. That deep down inside, I am broken, and that I'm using work to plaster over some yawning gap within myself.

The yawning gap in neuroscientists’ understanding of their topic is in the intermediate scale of the brain’s anatomy. Science has a passable knowledge of how individual nerve cells, known as neurons, work. It also knows which visible lobes and ganglia of the brain do what.

But always and ever there is a yawning chasm below[.]