However, the idea of "local strict positivity" is not too far from a workable definition:

There is only one workable definition of opera.

When the city has tried to exempt "mom and pop" businesses, it has found it difficult or impossible to adopt workable definitions.

There are problems to solve, not least the difficulty of constructing a workable definition of the public interest.

Any workable mathematical definition is necessarily finite.

How's about that for a workable definition?

The level of material is also hard to pin down with workable definitions.

There must, however, be clear, workable and manageable definitions of what is meant by European works and independent producers.

I consulted several field guides and botany books hoping to find a workable definition.

The only workable definition is communism.