How to add inflections and declensions to X (any) format so that when converted to mobi they are mantained

[Musrar]

I aim to add inflections and declensions to a German bilingual dictionary I have. In what format and what syntax should I add them so that a final mobi file has all of them (in the idx tags etc)?

[ilius]

You can convert to Tabfile (.txt) or Dictfile (.df) and edit the file.

Dictfile: https://pgaskin.net/dictutil/dictgen/#dictfile-format

For Tabfile, terms (headword and alternates) need to be separated by |

Try different text editors to see what works best.