The story
- Latin · derived fromūnus“one”
- New Latin · derived fromūnilaterālis“one-sided”
- English todayunilateral
A modern creation (circa 1802), from New Latin ūnilaterālis (“one-sided”), from Latin ūnus (“one”) + laterālis (“sided, lateral”), equivalent to uni- + lateral.
Words from the same roots
Latinūnus all →
unionunarybiuneun-unalist
Etymology from Wiktionary, CC BY-SA 4.0.