ADJ.
endearing
VERB + MADDENING
continues
ADV.
truly
adj
Causing frustration or anger.
Leading to insanity.
adjective — extremely annoying or displeasing
These brain teasers are maddening. I can't figure out any of them!
It's maddening.
His lack of self-awareness was sublime. That could be either endearing or maddening.
This continues to be maddening.
Her indecision is truly maddening.