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Circuitous
Avoid in Simplicity
Use 'circuitous' when simplicity isn't the goal and complexity is expected or required in the explanation or route. 
Extended Conversations
'Circuitous' is often used when someone takes a long time to get to the point in a conversation. 
Not Always Negative
Sometimes 'circuitous' can describe a positive and strategic approach rather than a purely inefficient one. 