Dumb words in common nomenclature

This has been gnawing at me for a while now. Words like deplane which means to disembark an aircraft is one of the stupidest words I have ever heard. According to the Merriam Webster dictionary though the word itself has a foundation from 1923. I honestly cannot believe that since the word has only been in common usage in the past few years. The word itself makes no sense, and there are no other intransitive verbs for any other craft. Deboat, or decar for example. Because they sound dumb that's why. "for those of you who will be deboating at the port today please have your passports ready." Deplane sounds just as dumb, its just yet another shortcut around using multiple words. Disembark the aircraft sounds better, and does not make the flight attendant sound like a complete moron. Instead we have to listen to Tattoo tell us of all "de planes" around us in the airport.