Asklemmy

Literally and Crescendo are my vocabulary pet peeves. Both have stupidly evolved to include definitions that mean the exact opposite of their true meanings.

Literally is annoying, but Crescendo is impossible. That is a specific musical term with an unalterable meaning. It means a gradual increase in volume, but it has come to mean a climax. Something will be described as "it rose to a crescendo," and that is simply wrong. Something can crescendo to a climax, but not the other way around. If you change it to mean the climax, you can't crescendo to a crescendo, s what's the word for gradually increasing the volume?

Besides, it's a musical term, and musicians will define musical terms, not illiterate civilians.

And if Literally can also mean "similar to," then what word can be used to literally mean Literally?

The one that bothers me most (heard a lot in the software dev world) is when people say process-eez instead of processes, even if it is technically a word now, like ain’t

“Casted”

The past-tense of cast is cast. “The fisherman cast their line into the river.” “The actor was cast in the leading role.”

Casted makes you sound like a child.

"Reticent" used to mean 'reluctance to speak', or, 'holding your tongue', but in the last decade I saw it being used more frequently as a straight up synonym for 'reluctance'. I wonder if people maybe think it's a more authoritative sounding word?

It's not a change of convenience or cultural drift, just a sign of people reading less and subconsciously trying to hide it, I think.

would of literally their

People using then instead of than. I never saw that 30 years ago.

also i fear that "comfort" is losing the battle to "comfortability"

Pronouns getting weird, especially when and is added, like "for him and I" or "her and I's house".

Also excetera for etcetera and mischievious for mischievous

I was one of the first years to have the new spelling rules.
It used to be, that a letter appearing more than twice in direct sequence would be cut to just twice. But that was lifted and is now just how many it should normally be. Examples: Schifffahrt, Brennnessel, Seeelefant.

It used to be, that "dass" could also be spelt "daß", but the rules for "ss" and "ß" were made clearer and more concise.

They also changed the way words could be split at the end of a line. If there was a double consonant in-between the syllables that were to split, the first syllable would take both consonants but now they are split evenly.
immer is split im-mer and not imm-er
But ck makes an exception: knackig is kna-ckig instead of old knak-kig

I don't know if this fits the question, but in Brazil the "Portuguese-Language Orthographic Agreement of 1990" only started to take effect in 2009 (after I was born), in a transition state, and in 2015 it became official and obligatory.

The changes that I still fumble with are diacritics (e.g. "Idéia" -> "Ideia") and hyphens (e.g. "contra-regra" -> "contrarregra").

i've never learnt to use tildes in spanish lol i mean i know some rules for that but i just never cared, most people dont use them while texting unless the corrector adds it.