General Opposites:
* Complex: This is the most common and direct opposite.
* Complicated: Similar to complex, but often implies a more intricate or difficult understanding.
* Intricate: Describes something with many interwoven parts or details.
* Elaborate: Means something that is highly detailed and often quite ornate.
* Difficult: Means something that is hard to understand or do.
* Challenging: Similar to difficult, but may also imply a sense of excitement or motivation.
More Specific Opposites:
* Sophisticated: This can be the opposite of simple in terms of design, style, or intellectual understanding.
* Advanced: This is the opposite of simple when talking about level of skill or knowledge.
* Extravagant: This is the opposite of simple in terms of cost or excessiveness.
* Cluttered: This is the opposite of simple when talking about organization or appearance.
To determine the best opposite for "simple," consider the specific context in which the word is used.