1. speech or writing that is difficult to understand due to complex vocabulary, syntax, or structure
The professor's complicated language made the lecture hard to follow.
A linguagem complicada do professor tornou a palestra difícil de acompanhar.
2. unnecessarily complex or obscure expression that could be conveyed more simply
Avoid complicated language in technical documentation; aim for clarity.
Evite linguagem complicada na documentação técnica; procure ser claro.