Of the "free as in freedom" options: Wiktionary and patience. DeepL is not FOSS, and I suppose most other similar sites aren't.
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I've just looked up Wiktionary in Kiwix and it's available to download for offline use too. Just under 8GB.
Books such as dictionaries (or dictionary websites), or we ask friends etc who speak those language
Edit: Glosbe is also a good option as it's translated by actual people, not machine learning rubbish.
I think that URL might be for something else entirely. Unless they also do industrial manufacturing
Edit: Yup! Looks like a couple transposed letters https://glosbe.com/
Thanks! Didn't notice the s and the b were the other way round!

I use mainly dict.cc because it's not supporting linguee/deepl monopoly but I also use linguee if dictcc reaches its limit.
I don't like the situation.
dict.cc looks cool - thanks for the recommendation 👍
It's ok ...
Beware it's not foss
To me, the go-to answer used to be DeepL, but more recently it's Kagi Translate. It's really accurate for languages I do speak (English to German and vice versa) and allows for recorded speech, although that seems to be reliant on clear talking (my first try of "Hello, what's going on?" was recorded as "Yo, what's going on?")
I just tried it out and it looks great. Do you have a subscription with them?
Agree and yes! I happily pay around 100€ annually. Comes with quite a few good perks
- unlimited access to probably one of the best search engines (for search-engine-literate folk it's not necessarily that you'll magically find better websites, but the quantity of garbage-/AI-websites will just be heavily reduced and you won't have the problem that the first three or so links will be ads/sponsorships; it makes searching just feel nicer)
- customisable search (for example, I can generally rank search results for pinterest lower or outright block them to not even have them show up in the first place and instead boost results from beehaw)
- customisable and privacy-respecting AI bots only if you want to use them (from what I could find out, the AI bots always start every new conversation with a blank slate of you, no matter how much you've used Kagi or the LLMs before)
- Kagi Small Web, which is an initiative to basically push the "alive internet theory" by highlighting small blogs and personal websites of a whole range of people
- Kagi Universal Summariser, which is an AI summariser that works very well on just about any text you give it and, for the articles and papers I threw at it, doesn't tend to hallucinate stuff