Question

sort words according to the meanings of their prefixes or suffixes. indirect, insecure, estimator, governor, conqueror, inexpensive. suffix means one who does an action. prefix means not

Explanation:

The suffix "-or" often means one who does an action. So, "estimator", "governor", and "conqueror" fit this. The prefix "in -" can mean not. Thus, "indirect", "insecure", and "inexpensive" match this.

Answer:

Suffix means one who does an action: estimator, governor, conqueror
Prefix means not: indirect, insecure, inexpensive