my second post of the day

demonstrate

de - mon - strate

de - monstr - ate

demon - strate

demons - tr - ate

demonstrate
from the latin, de + monstrare (to show)

monster
from the latin monstrum, omen or monster, from monere, to warn

Related Words: ogre, bete noire, bogey (also bogy or bogie), bugaboo, bugbear; banshee, bogeyman, demon (or daemon), devil, fiend, fright, imp, incubus; horror, terror, abomination, anathema; abnormality, freak; mutant, mutation