intricate phoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticphonetic adjective 
having a lot of small parts that are arranged in a complicated way and therefore sometimes difficult to understand, solve or produce 
The watch mechanism is extremely intricate and very difficult to repair.
The police officers who interrogated the suspects were involved in an intricate web of deceit.

intricately phoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticphonetic adverb 
The pendant bears an oblong sapphire and is intricately engraved.

intricacy phoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticphonetic noun [U] 
Tapestries are very expensive to repair because of the intricacy of the work involved in making them.

intricacies phoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticphonetic plural noun 
Intricacies are complicated details. 
It was a really good movie, but I couldn't follow all the intricacies of the plot.
The intricacies of dealing on the stock market are an obstacle to wider share ownership.
( Cambridge International Dictionary of English )