Here's how to stop your Apple Watch from showing quick summaries for notifications:
Turn Off Notification Summaries on the Lock Screen
1. Open the Settings app on your Apple Watch
2. Tap Notifications
3. Turn off the "Show Summary When Locked" option[1][2][3]
With this setting disabled, your Apple Watch will not display a brief summary of notifications when the watch is locked. Instead, you'll need to tap on the notification to see the full details.
Disable Notification Previews When Raising Your Wrist
1. Open the Settings app on your Apple Watch
2. Tap Notifications
3. Turn on the "Tap to Show Full Notification" option[1][2][3]
Normally when you raise your wrist to view a notification, your Apple Watch shows a quick summary first, then displays the full details after a few seconds. Enabling "Tap to Show Full Notification" stops the summary from appearing automatically - you'll need to tap on the notification to see the complete message.
By turning off both "Show Summary When Locked" and enabling "Tap to Show Full Notification", your Apple Watch will no longer show quick previews of your notifications. You'll need to actively tap on each notification to view the full details[1][2][3].
Citations:[1] https://support.apple.com/en-ie/108369
[2] https://support.apple.com/guide/watch/change-notification-settings-apd9b833c9f3/watchos
[3] https://support.apple.com/en-jo/guide/watch/apd9b833c9f3/watchos
[4] https://discussions.apple.com/thread/252234879
[5] https://support.apple.com/guide/watch-ultra/change-notification-settings-apd9b833c9f3/watchos
[6] https://www.youtube.com/watch?v=gQlnrSmmdEA
[7] https://discussions.apple.com/thread/253774054
[8] https://support.apple.com/en-us/108781