Determine
A roof is correct only if you determine that it is.
Imagine looking at a roof, and someone asks you, "Is this roof correct?" "I determine it is."
てい, じょう
さだ
None
You determined it, but you still have to test this determination. You go to the top and roll a tater (てい) tot down the roof. Tater tots will only roll down a perfectly correct roof.
"Because of my tater tot roof test, I have once again determined it is correct."