apathetic, a pathetic

Apathetic or apathetic ( one word ) means not interested; completely indifferent, intellectually or emotionally --
Too many citizens are apathetic when asked about the upcoming election.
He's apathetic in general, and always says he's bored.

A pathetic or a pathetic ( two words ) means one ( a ) person or thing that arouses pity or that appeals to emotion in general ( pathetic ) --
The kitten gave a pathetic cry, and we found him hiding under the car.
The lawyer made a pathetic appeal to the jury, and nearly persuaded them to acquit his client.

Now that you know that, you can say --
"She made a pathetic entreaty, but her audience remained apathetic."

Note -- not to be confused with "apatetic", describing natural camouflage --
The stick insect's apatetic shape and coloring make it difficult to spot.

apathetic, apatetic

Apathetic or apathetic means not interested; unconcerned or indifferent--
Students should be intereseted in politics, not apathetic.
She gets excited about sports; he is apathetic.

Apatetic or apatetic means having or taking a form that makes camouflage or deception--
The insect's apatetic coloration helps him to elude potential enemies.
The caterpillars are apatetic; people don't usually notice them.

Now that you know that, you can say--
"He was fascinated by the exhibit of apatetic coloring in insects; she was apathetic."