Comparative form of complex; more complicated, intricate, or difficult to understand.
Comparative form of complex (Latin complexus) using -er suffix (Old English -er, comparative marker). Shows a higher degree of complexity than something else.
Interestingly, most people say 'more complex' rather than 'complexer'—complexer sounds awkward, which shows how English speakers prefer Latin-based comparatives (-more) for Latin-based adjectives, but complexer IS technically correct!
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