Secret decoder ring

Question

I was digging in my dad's trunk and I found some sort of 1940s secret decoder ring. Not quite sure how it works, but anyway, one of the lines has become almost illegible (#T#######). Can someone help me to restore it?

              ^
              |
              |
   <wrap around to bottom>
  
     |    RELEASED     |
     |  CONTRIVANCE    |
     |   RETRIBUTION   |
     |    BELIEVED     |
     |    EMBATTLED    |
     |    UNMARKED     |
     |   DISPATCHED    |
     |   ENCOURAGE     |
     |   DISSENTER     |
     |    INSEMINATE   |
     |   PROPORTION    |
     |   CONFOUNDED    |
     |    SQUIRMING    |
     |    #T#######    |
     |   PREFECTURE    |
     |  UNDETERRED     |
     |    DELECTABLE   |
     |  CONGREGATION   |
     |   SUCCESSIONAL  |
     |   UNIMPEDED     |
     |   OVERDRESSED   |
     |    FORGOING     |
     |    DECEIVING    |
  
   <wrap around to top>
              |
              |
              v

Answer 1

Let me take a closer look at your ring... ah, it seems you missed

the small crack running down the middle, all the way around the ring.

So if you just pull here, and push this way...

you can separate the two halves, and twist them a bit relative to each other!


Now this makes the new words SQUI????? and ?T??CTURE. The latter has to be STRUCTURE or STRICTURE, and the only way to complete STR[u/i]????? and SQUI????? the same way is with GGLE[s/d/r].

So the missing word is STRUGGLES! (Or STRUGGLED, or (less likely) STRUGGLER).