From There To Here

I can travel from there to here by disappearing, and here to there by reappearing. What am I?
Fracas

[ frey-kuh s]
Felicity

[ fi-lis-i-tee ]
Peruse

[ puh-rooz ]
Arduous

[ ahr-joo-uhs ]
Pertinent

[ pur-tn-uhnt ]
Prodigal

[ prod-i-guhl ]
Anomalous

[ uh-nom-uh-luh s ]