Something complex: a maze of bureaucratic and legalistic complexities. (noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "complexity" in a sentence
"\ "But reducing visual complexity to make things pleasing to the eye by hiding critical information, \" from knowledgeable stakeholders, will certainly increase composition and or \ "structural complexity\", and make it difficult for stakeholders to grasp full understanding."
"Every class starts with 100 gold to equip themselves, a welcome reduction in complexity from the class-based random roll that still persisted in 3e."
"Brain complexity is imposing as well; making broad conclusions linking thought to specific physical causes problematic."