I'm working on getting all words of power to every shout and right now I have but Slow Time and Dismay to complete. I've done some research and I was wondering, is joining Stormcloaks requisite for getting the last word of power? I really prefer to remain neutral in the war but I also wish to complete my words collection. This community has never let me down before, so I hope it won't now. I appreciate anything helpful.
You can not enter Korvanjund without siding with some faction in the civil war. That means either joining the Stormcloaks or the Imperials is your only way to get that Word of Power.
You can get the 3rd slow time word without joining any civil war factions by exploiting the plate/bucket glitch that people use to teleport through walls. With a few wooden plates you can glitch through the rubble at the start of the dungeon, swing by the word wall, and glitch back through the rubble. (I'm not sure this won't permanently break the civil war quest, so I wouldn't do it unless you want the imperials and stormcloaks to remain in a stalemate.)
Another way to get there (For PC) is to click on the doors (in the console) that are locked and type "unlock" to unlock them and go through the ruin.
Why not just start the quest as imperial or storm cloack and then decide later who you want to give the crown to i did the mission to get the crown with imperials and gave the crown to ulfrik and joind the north by doing so 😀