The word "overfilled" is correct and usable in written English.
You can use it when you want to refer to something that contains more of something than it should. For example: "The shelf was overfilled with books."
The drains just cannot cope with the water that's coming down from the mountains – they are overfilled with sludge," she said, before adding that Funchal was like a "ghost town".
Glorious sits firmly in the big-vocal dance-pop category, an arena already overfilled with the likes of Miley, Rihanna, Ellie, Florence … It has the statutory blend of ballads and bangers, though it fails to make me either blub or buzz.
Think of someone who, having overfilled their car tires, ends up on the side of the road with a flat.
The event was held in a ballroom overlooking the zoo's grounds, and by the time some of London's most esteemed writers — Tom Stoppard, Kazuo Ishiguro, Julian Barnes, Edna O'Brien — showed up for the catered dinner the place felt like an aquarium overfilled with tropical fish.
Struggling to finish the book, Baldwin left Istanbul behind in 1971 — the city was now as overfilled with distractions as Paris or New York — and bought a house in the South of France.
Watching Mike Huckabee announce that he was leaving his Fox News show to explore a run, one feared he might burst into song (he's done it before), and turn a statement already overfilled with praise for Roger Ailes, his Fox boss, and the shared principles of everyone at the channel, into some sort of ballad.
The movie, though memorably fraught, is perhaps overfilled with ideas for smart short stories.
As a truck overfilled with 27 soldiers, waving and cheering, left the polling station, a suicide bomber approached on foot and blew himself up, according to a policeman at the scene.
Many of the raucous sidewalk beer halls, cafés and tea shops were no longer overfilled with students, day laborers and competing mobile vendors.
The gate was overfilled with noisy families returning from vacation, and an announcement asked for volunteers to give up their seats.
(And yes, they were overfilled, but that was a good thing).
