General Opposites:
* Illegible: This is the most direct and common opposite, meaning difficult or impossible to read.
* Unreadable: Similar to illegible, but can also encompass things that are written in a way that is confusing or meaningless.
* Indecipherable: Meaning impossible to understand or decode.
More Specific Opposites:
* Scrawled: For handwriting, this implies messy and unclear writing.
* Blurred: For images or text, this means difficult to distinguish due to lack of focus.
* Obscured: Meaning hidden or covered, making something difficult to see or read.
Opposite in Meaning:
* Incomprehensible: This describes something that is impossible to understand, not just because of the way it is written, but because of its meaning or content.
The best opposite for "legible" depends on what you're trying to convey.