Occasionally, the most logical name for something (e.g. a variable) is a reserved keyword in the language or environment of choice. When there is no equally appropriate synonym, how does one name it?
I imagine there are best practice heuristics for this problem. These could be provided by the creators or governors of programming languages and environments. For example, if python.org (or Guido van Rossum) says how to deal with it in Python, that would be a good guideline in my book. An MSDN link on how to deal with it in C# would be good too.
Alternatively, guidelines provided by major influencers in software engineering should also be valuable. Perhaps Google/Alphabet has a nice style guide that teaches us how to deal with it?
Here's just an example: in the C# language, "default" is a reserved keyword. When I use an enum, I might like to name the default value "default" (analogous to "switch" statements), but can't.
(C# is case-sensitive, and enum constants should be capitalized, so "Default" is the obvious choice here, but let's assume our current style guide dictates all enum constants are to be lower-case.)
We could consider the word "defaultus", but this does not adhere to the Principle of Least Astonishment. We should also consider "standard" and "initial", but unfortunately "default" is the word that exactly conveys its purpose in this situation.