splitting

An instance where something splits.

A division in the mind, or affecting one's sense of self.

In other words, something troubling, such as being discovered in the toilets in a shaming way, can be both remembered and also pushed to the periphery of consciousness, a process that psychotherapists refer to as ‘splitting’.

The cleavage of a covalent bond.

Resembling the sound of something being split or ripped.

Very rapid.

They moved at a splitting pace.

Severely painful.

I have a splitting headache.