Note: these 'words' (valid or invalid) are all the permutations of the word app. These words are obtained by scrambling the letters in app.
Definitions and meaning of app
(US) IPA(key): [ʔæʔp̚]
Shortening of application.
(computing, mobile telephony) An application (program), especially a small one designed for a mobile device.
(military) application (use, purpose; not a computer program)
1995, The X-Files (TV series), Nisei (episode)
SCULLY: What are these chips used for? PENDRELL: Video games, brake systems, they're finding new apps every day. I just read about one being designed to help the severely disabled operate computers using brainwaves.
(education, informal) application (to a college etc.)
The food is some of Breck's best: apps like sweet potato gnocchi with smoked chicken and sage cream[…]
2010, Bill Allen, Grillin', Chillin', and Swillin' (page 1)
This is not to say that we only serve apps at dinner parties. Quite the contrary; but for smaller gatherings, good appetizers can distinguish you as a host who puts more thought and effort into his or her party menu. Better yet, most apps are relatively easy to make[…]
Shortening of appearance.
(sports) an appearance in a game (e.g., a player with 10 apps in a season played 10 times)
Appendix:American Dialect Society words of the year
Borrowed from Englishapp or a clipping of aplicação / aplicativo.
(Brazil) IPA(key): [ˈɛ.pi]
appf or m(in variation) (pluralapps)
(computing)app(small computer application)
“app” in Dicionário Priberam da Língua Portuguesa.
IPA(key): /ˈap/, [ˈap]
The feminine noun app is like other feminine nouns starting with a stressed a sound in that it takes the definite article el (normally reserved for masculine nouns) in the singular when there is no intervening adjective:
However, if an adjective, even one that begins with a stressed a sound such as alta or ancha, intervenes between the article and the noun, the article reverts to la.
In practice, this rule is often not followed and the form la app is widely used.