demonstr.a V 1 1 PRES ACTIVE IMP 2 S
demonstro, demonstrare, demonstravi, demonstratus V (1st) TRANS [XXXBO]
point out/at/to, draw attention to; explain/describe/show, give an account of;
reveal, mention, refer to; allege; prove, demonstrate; represent; recommend;

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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.