How do you use the word sadden in a sentence?

sad (sād) Pronunciation Key

adj. sad·der, sad·dest

1. Affected or characterized by sorrow or unhappiness.
2. Expressive of sorrow or unhappiness.
3. Causing sorrow or gloom; depressing: a sad movie; sad news.
4. Deplorable; sorry: a sad state of affairs; a sad excuse.
5. Dark-hued; somber.

[Middle English, weary, sorrowful, from Old English sæd, sated, weary; see sā- in Indo-European roots.]

sad'ly adv., sad'ness n.

- dictionary.com definition, and yes it is, right under " (sad) " it says sad-der

***2nd Answerer says: Nothing could be sadder than to not get a sample sentence using the Word sadder in it.

For example;

The puppy's eyes could not look sadder.