My manager uses technical terms incorrectly all the time, how do I correct them?

Don't. You have absolutely nothing to gain from this. Well, nothing that has any real value anyway... maybe some "sense of self satisfaction" or something. But that won't buy you a cup of coffee at Sheetz. OTOH, it could put you on the "short list" next time layoffs roll around, or even get you canned more or less immediately, especially in a "right to work" state.

Seriously, don't risk embarrassing your boss. If it's that big a deal to you, quit, and find a job somewhere else with a better boss.

As the old saying goes "What an interesting game. The only winning move is not to play".

A lesson Marcus Aurelius learned: "From Alexander the grammarian, to refrain from fault-finding, and not in a reproachful way to chide those who uttered any barbarous or solecistic or strange-sounding expression; but dexterously to introduce the very expression which ought to have been used, and in the way of answer or giving confirmation, or joining in an inquiry about the thing itself, not about the word, or by some other fit suggestion."

http://classics.mit.edu/Antoninus/meditations.1.one.html

Actual conversation interrupting someone in a meeting:

Me: "Wait, hold on, when we are talking about Agile, do you mean Scrum? Like the one with weekly sprints?"

Boss: "What's a sprint? I mean those guys who handle the AWS and servers and backups."

Me: "Ohh, so you meant DevOps?"

Boss: "Yeah, that's the word."

Me: "Ohh... I used to confuse those words a lot too."

Just be polite, don't make them feel embarrassed. Take a neutral tone. Do it for clarification, not because it hurts your ears.

It's more of a person-to-person thing, and not really something we can offer much advice on, as we don't know your personality, or your bosses.

A few years ago I had a manager that would claim that we did BDD all the time because we wrote user stories. We did no unit testing of any kind, and it put us in hot water with a potential client when they asked to see our BDD framework. I had tried to tell him on a number of occasions that there was more to BDD than writing user stories, but he never stopped, and it made the company look a bit silly. It wasn't a personal thing as we got on really well, and he relied on me a lot for support, so not sure why he didn't take the correction on board.

All you can do is privately tell them that the term is incorrect. If they continue to use them incorrectly then that's their problem.

Does s/he have a technical or business background?

I once corrected my manager when I was contracting at an Australian ISP. It was something about browser cookies I think. As soon as I told him he's wrong, (we were in a pretty open-plan albeit half empty office) he just stopped talking, turned his chair around and went back to work.

I asked him if he had things for me to do for 3 days always with responses of just "no", before I contacted by contract manager (affectionately referred to as "pimps" in Australian contracting) and explained the situation.

Later that day the manager turns to me and says I did the wrong thing by talking to my pimp - I should have talked to him directly instead. The irony was lost on him I think.

Anyway. I'd still do the same thing in that situation (technical discussion that affects work).

But if a guy who doesn't actually do the technical work insists on saying "depreciated" instead of "deprecated" or "jdk" instead of jvm, but others know what he meant, it's probably harmless.

If you're really hell-bent on doing something, ask HIS boss how to correct him. (Have a list of specific real examples memorized.) Do this mostly just to be sure this boss gets the message that he's being snowed. Chances are good your boss is spewing terminology to impress this person, who doesn't know he's being shat on. But have a resume prepared even if you go for this indirect approach.

I used to correct people when I thought they were using the wrong terms. I realized 99% of the time I was achieving two things, derailing the conversation, and making myself look like an arrogant jerk.

It turns out in tech people use the same jargon in different ways. If I'm able to understand what they are saying, that is the important part and I just move on. If I'm not quite sure how to interpret what they are saying, I'll try to clarify.

If its a pretty glaring mistake, and you really feel the need to correct the mistake, muzani's script is pretty good. You could even go with "Oh, I've heard that called xyz before."

If someone wants to replace the word DevOps with Agile, I say why not. At the end of the day the bits and bytes don't give a damn what they are called.

Ah, a common problem, though long since covered through extensive case studies via BOFH. The earlier works seem most generally applicable ;)

https://www.theregister.co.uk/data_centre/bofh/

The purpose of language is to communicate. If they use the wrong terms and communicate, it's not an issue. If they use the wrong terms and miscommunicate, that is an issue.

If they are miscommunicating, you can always ask them what they mean when they use the term, and say it's because you want to make sure you understand what they are saying, and you've heard the term used in a different context and want to make sure you and they are on the same page.

First, make sure YOU know the definitions WITHOUT looking them up.

Try asking clarifying questions to push your manager to expand their understanding. Some ideas are: "What do you mean by X in that context?" "Thats interesting, how does that work exactly?" "I've heard of x used as y, how would it be used in your example?"

Go rogue and publish a glossary of techncial terms with public references and post it up in your office.

Clarity is key. If your manager is using terms incorrectly, they are likely confusing others on the team or representing the team inconsistently. In the end they need to get their skills up, get more info, or get out of the way. IMHO.

This depends on your relationship with your manager and your reasons for wanting to correct him/her.

If you are close with your manager, have a chat with him/her in private and let them know politely what the correct terms are without offending them. If you're sincere and genuinely concerned about your boss, he/she will be thankful. The tone and intent of delivery counts.

If you're just looking to correct him/her because you feel you are smarter/better than him/her, it would be better not to. Not everyone is perfect.

Create rapport and trust. Then proceed to bring up some of the terms, in private, along with some reference supporting the correct use. Frame it as something you noticed he mentioned and wondered about so you looked it up. Never frame as right or wrong.

Proceed with steps beyond #1 only when you have enough trust and rapport. Never correct in public.

I remember a certain someone who used to talk constantly about "flat plate" monitors when LCDs were becoming affordable. Did not take correction attempts very well.

Correcting managers can be a career limiting move. Do you really need to?

You could take solace from Dilbert. every workplace seems to have one or more PHBs.

Maybe a neutral, technical and anonymous email could do the trick. :)