How to catch grammar mistakes in Discord messages before you hit send, on Mac

You type a quick reply to a group chat, hit enter, and immediately spot the typo. Now you have two options. Leave it and hope nobody notices, or edit it and have Discord mark it with a visible edited_timestamp that shows an "(edited)" label to everyone in the channel. Either way, the mistake already happened in public.

Discord does not have a built in grammar checker. But there are a few ways to catch mistakes before you send, right on your Mac, without changing how you chat.

Discord's desktop app for macOS and Windows includes a native spellchecker that underlines misspelled words in red as you type, similar to a word processor (Discord). You can turn it on or off by right-clicking inside any message box and toggling Spellcheck.

That native check is useful, but it has real limits.

• It flags misspellings only, not grammar, tone, or awkward phrasing.
• It depends on the language pack installed in your Mac's keyboard settings, so it can misfire if your system language does not match how you write.
• It cannot rewrite a sentence. It can only underline a word.

If you catch a mistake after you have already sent the message, Discord lets you edit it by hovering over the message and selecting the pencil icon (Discord). The catch is that the edit is not private. Discord's message object stores an edited timestamp, and the client uses it to display an "(edited)" label next to the message for everyone who can see it (Discord Developer Docs). Fixing a mistake after the fact still leaves a small, permanent sign that you made one.

Grammarly's desktop app for Mac lists Discord as one of the native apps it supports out of the box (Grammarly). Once installed, a floating widget appears over the app and underlines grammar and spelling issues while you type, before you ever hit enter (Grammarly).

It is a solid option if you want one grammar tool that follows you across every app on your Mac, not just Discord. A few trade-offs are worth knowing before you install it.

• It requires creating a Grammarly account, free or paid, before suggestions appear in any app (ITGeared).
• It runs as a background widget that scans your typing continuously, in every app you allow it to run in, not just when you ask it to.
• It focuses mainly on grammar and spelling corrections rather than tone, clarity, or full rewrites.

Grammar checks catch typos. They do not tell you when a message sounds too blunt for a coworker, too casual for an announcement channel, or just needs to be shorter. That is a different problem, and it needs a different kind of tool.

This is where WordPolish fits into a Discord workflow. Instead of running in the background and watching everything you type, it sits quietly until you trigger it. You draft your message in Discord as usual, highlight the text, and press a hotkey. A review window shows the rewrite next to your original, and you apply it, undo it, or ask for another pass before you press enter to actually send.

The reason a Mac tool like this can read text inside a chat app that was never built to support it comes down to macOS itself. Apps like WordPolish use the system's Accessibility API to find whatever text is currently selected in the focused app, through an attribute called kAXSelectedTextAttribute (Stack Overflow). That is a macOS-level mechanism, not something Discord has to build support for, which is why it works the same way in Discord as it does in Slack, Mail, or Notion. It does require you to grant Accessibility permission once, in System Settings under Privacy & Security (Apple Support).

The difference from a background widget is simple. A continuously running checker is always watching. An on-demand rewrite tool only sees your text the moment you ask it to, which fits a messaging app where you would rather not have a floating overlay on top of every conversation.

Put together, here is a workflow that catches typos, grammar issues, and tone problems before a message ever reaches the channel.

1. Turn on Discord's native spellcheck to catch obvious typos as you type.
2. Install Grammarly's desktop app if you want continuous grammar and spelling checks across every Mac app, not just Discord.
3. Use an on-demand tool like WordPolish right before you hit enter, when you want to check tone or tighten a longer message.

None of these require you to change how you chat. They just give you a moment to check the message before it becomes permanent, "(edited)" tag and all.