Raphael wrote: ↑Tue Dec 15, 2020 10:03 am
Is there any way of predicting which slang terms or constructions will become well-established long-term features of their respective languages, and which will soon go the way of most old slang? I strongly suspect that the answer is "no", but I wouldn't mind being surprised on this.
I haven't read anything on this, and this is based on what I know of English, French, and to some extent Spanish.
I think that you're right that individual terms can't be predicted. But I'd say there are general tendencies.
* Unwieldy terms will get shortened.
* Slang terms are generally disrespectful (chick, kid), but occasionally ironic (guv'nor).
* Exaggeration and minimization are both attractive. Metaphors are usually vivid and visual.
* Much more than ordinary language, slang favors sound symbolism, unusual sounds, rhyme, etc.
* The underclass always has the best slang.
English slang seems to require a new word for "good" every ten years.
Slang is sometimes explained as hiding meanings from parents, the cops, etc., but these explanations don't address how easy it is to learn the expressions. Policemen quickly start using underworld slang themselves. I think a better explanation is that slang, like clothing, is a way of signaling what group(s) you adhere to. As one of those groups is generational, that's a big reason why slang changes over time.