The story
- Proto-Italic*aikʷos?
- Old Latinaiquos
- Latinaequus
- Proto-Indo-European*wekʷ-
- Proto-Indo-European*wokʷ-
- Latinvocō
- Late Latinaequivocus
- Proto-Indo-European*h₂el-
- Proto-Indo-European*h₂élisder.?
- Englishequivocal
- English todayequivocalness
From equivocal + -ness.
Etymology from Wiktionary, CC BY-SA 4.0.