I work on different Windows machines and keep my vaults up to date with the Sync service. However, the user dictionaries currently cannot be synchronized with the sync service. It would be nice to have an option for this. Thank you.
17 Likes
I have all settings sync toggles enabled, but my custom words are not synced to the same vault on other devices. Suggest supporting this.
5 Likes
I know this is a zombie thread but I was just about to make a new feature request about this exact same thing, so here is my +1 for this.
I upvote this.
Use case or problem
I had had to switch computers and move my vault around, and the spellcheck is stored in Obsidian’s OS config folder, so I have to move that separeatly, and idk if that even works because I haven’t tried it.
Proposed solution
Add a setting to store Custom Dictionary.txt in the root of the Obsidian config folder and have Obsidian read that for spellchecking.
2 Likes
Please make this happen. I lost my custom dictionary with hundreds of entries when I reinstalled my OS, because I forgot I needed to back up a separate file. 
1 Like
Following the post from @Sentiment, I too lost my custom dictionaries with a lot of entries due to a system crash. I would really like to see the spelling dictionaries be included in sync and usable on all devices that are signed into that account.
Also given that I work on both my desktop and laptop (and my iPhone/iPad from time to time, but not that often) not having to add words to the dictionaries on multiple devices would be nice as well.
3 Likes
So a temporary workaround that I have found: I can copy a list of known words that belong in the custom dictionary into the custom dictionary file and save it, restart Obsidian and off we go with no red squiggly lines
2 Likes
I am a sync subscriber and found it surprising that the dictionary was not synced with everything else. Working across different devices I do a lot of technical note taking and end up saving a bunch of acronyms to my user dictionary. I’d forget which device I was saving them on and just assumed they’d be available across all.
I’ve left a 
on the OP as I’d very much love to have this feature!
Thanks so much!
3 Likes
Also looking for this as well.
1 Like
Please move the file under /.obsidian 
It would be much easier to sync it!
2 Likes
I was also surprised to see this not supported!
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Besides syncing user dictionaries to the .obsidian folder in my vault, please also sync the values of Spellcheck languages!
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It’s actually so painful that the many, many fantasy words in my vault that I’ve added to the dictionary on my primary PC do not get synced to my laptop. Please obsidian team, help us out!
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I learned today that the user spell check dictionary is located:
Windows:
C:\Users<username>\AppData\Roaming\obsidian\Custom Dictionary.txt
Mac:
~/Library/Application Support/obsidian/Custom Dictionary.txt
1 Like
I thought I was losing it when words that I thought I had added to my custom dictionary were still appearing underlined, but it is totally because of this issue. I would also love for the Custom Dictionaries to be synced across devices!
2 Likes
I add my voice to everyone here. It would be really helpful and nice if Obsidian sync can sync dictionary/ spell check.