The root is care.
The word is 'cinch'.
Eureka!!!
precaution
Pedicure
Action
The root word "care" combined with the suffix "-less" creates the word "careless," meaning without care or consideration.
That word is "event."
The word done is an adjective. It means to be ready or fully spent.
Repeated and iterated are words that mean done again.
care, to get away from danger
Repair