Put the word perceptible in a sentence?

She couldn't think of the right word to substitute the other one; but what she didn't notice was that there was a thesaurus inside her desk.

I could not tell by her inscrutable smile whether she was pleased or only amused with me. The sea captain explored the inscrutable depths of the ocean searching for buried treasures.

The Miller's Tale is an exciting fabliau.

When Newton dropped the apple from the tree, it fell to the earth because of the earth's gravity. The gravity of the situation was clear when the police officer handed Jacob his third ticket for...

i heard the annoucement over the intercom.