The story
- Proto-Indo-European*gʷeyh₃-
- Proto-Indo-European*gʷih₃wós
- Proto-Germanic*kwikwaz
- Proto-West Germanic*kwiku
- Old Englishcwic
- Proto-Germanic*silubrą
- Proto-West Germanic*silubr
- Old Englishseolfor
- Old Englishcwicseolfor
- Middle Englishquyk silver
- Englishquicksilver
- English todayquicksilverish
From quicksilver + -ish.
Etymology from Wiktionary, CC BY-SA 4.0.