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"complex" is also used as a crossword clue. If that's what you saw, the answer is often intricate (9 letters).
Definitions
Complicated; also a connected group of buildings or things.
Word origin
From French complexe, from Latin complexus, past participle of complector (“to entwine, encircle, compass, infold”), from com- (“together”) and plectō (“to weave, braid”). May be analyzed as com- + -plex. See complect. Doublet of complexus.
Used in a sentence
“a complex being; a complex idea”
“The human body is a complex system made up of many layers.”
“Ideas thus made up of several simple ones put together, I call complex; such as beauty, gratitude, a man, an army, the universe.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Intricate”7 letters
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