Word mod c/ch
An internal 'c' might be rendered by 'ch'
diadoch.us N 2 1 NOM S M
diadochus, diadochi N (2nd) M [XLXNO] Pliny
precious stone (kind of); jewel resembling beryl (L+S);
successor, one who holds office by right of succession;

Credits:
This, our local install of the popular standby Whitaker's Words, is possible thanks to the resurrection of the venerable project at William Whitaker's Words, where you will also find extensive documentation. The corresponding GitHub repository is where you can submit issues about missing forms and analyses.
This web interface by Walter M. Shandruk.