Say you're trying to convince people on a message board that a politician you don't like is a fascist (this could apply to just about any major political party). They aren't buying it. Well, the dictionary is irrefutable, so you look up fascism.
Damn it! This politician's views don't fit the definition of fascism at all!
Wait ... That's just their definition of fascism, not yours. Of course it's the label of fascism that is bad, and not the actual definition, so you just make the label apply, and make everyone believe you. And maybe if you do it for long enough, it will catch on and they'll fix the dictionary!
Ways to do this are:
- Stretch the definition to make it apply.
- Use loose connections or associations.
- Selectively use just one part or application of the definition.
- Exclude any examples that don't fit your meaning.
- Draw a specious connection to something from the word's etymology.
- Just make something up.
Keep in mind that Tropes Are Not Bad, and the dictionary meaning of words can and do change over time- many dictionaries now include some variation on "derogatory term for a disliked politician/political group seen as dictatorial" as one definition of fascism, for instance. (Dictionaries, we should remember, simply record the ways words are commonly used, not necessarily the ways any prescriptivist groups think they "should" be used.) Attempting to create a new meaning by yourself, however, is a good way to prove you have Delusions of Eloquence.
Compare Malaproper, Newspeak, Implausible Deniability, Chewbacca Defense, No True Scotsman, Metaphorically True, and Unusual Euphemism. Not to be confused with Neologism which is making up words to add to current dictionaries. Twisting the Words is when someone applies this trope to a word someone else used, and Separated by a Common Language and Did Not Do the Bloody Research is when they are using the word correctly- with a different dictionary.
Contrast Accidental Innuendo, and Unfortunate Implications when someone uses a word strictly by the dictionary definition ignoring important colloquial meanings, Jive Turkey and Totally Radical for when dictionaries finally catch up with past vernacular a few years late, Have a Gay Old Time and Hilarity Ensues when the alternate slang meaning becomes the primary meaning, and Get Thee to a Nunnery occurs when a slang meaning is lost to time.
See also: Artistic License Linguistics.