However, depending on the specific meaning you want to convey, you could use suffixes like:
* -ion: demonstration (a process of showing or explaining something)
* -ive: demonstrative (showing or expressing feelings clearly)
* -or: demonstrator (someone who demonstrates something)
You could also use prefixes to modify the meaning:
* re-: re-demonstrate (to demonstrate again)
* pre-: pre-demonstrate (to demonstrate in advance)
Ultimately, the best suffix or prefix to use depends on the specific context and the meaning you want to convey.