How many times have you been talking to people and they say “sigh”. People have refrained from actually ‘heaving a sigh of disappointment’ only to actually use the expression in their vocabulary.
It’s also seen with the commonly used “lol” – expanded to ‘laugh out loud’. So people these days have incorporated the word (if you can call it that) into their language. So people today are actually saying “lol” rather than “laughing out loud”.
It makes me wonder if the day will come when people will say “clap” or “applause” rather than actually applauding!