I'm looking for a commonly used term to describe a trait that has clear current utility but an evolutionary origin that is uncertain and that we do not necessarily wish to emphasize in our description (e.g. to avoid unnecessary speculation):
- Adaptation emphasizes an origin driven by natural selection.
- Exaptation emphasizes an origin driven by co-option.
- "Aptation" fits the bill, but it seems cryptic and rarely used.
Thank you for your help.