Answer: The word that does not fit in this set is unsophisticated.
Explanation:
All the words in this set, except for 'unsophisticated', are related to the state of being complex - containing a lot of small parts/details.
The word 'intricacy' stands for the quality of being complex; word 'complexity' is a synonym for 'intricacy'; 'sophisticated' is an adjective that means 'complicated.' These three words have similar meaning, while the word 'unsophisticated' is an exception and the antonym for 'sophisticated', meaning 'basic.'
