What he did can't be undone.

What he did was an irretrievable mistake.

He tidied up the room quickly.

A toneme is a part of linguistics, and it has the ability to change the meaning by changing the pitch or strength of a specific sound.

He is a liar, so it's better not to believe his words.

His jokes often turn out to be many a true word spoken in jest.

The Supreme Court has decided to allow a certiorari.

I used iodate in a chemistry experiment.

The oriental small-clawed otter is popular for its small hands and lively personality.

I think his story is nothing but lies.