As soon as it was said that parenting was 'def' redoubtable for her, I decided silly was the new word of the day.
If we wanted to really be wordwise, we would use the word 'definitely' or something.

"What's that?"
"Well, it's a pronoun used to refer to objects not in close proximity. But "that" isn't important right now."
Proper use of redoubtable:
"Having doubted Jesus in his first life, when Thomas heard that Jesus had risen from the dead, he realized that Jesus was now redoubtable."