Latin word coniunx comes from Latin iugo (I join, yoke.), Latin con-, Latin con

Detailed word origin of coniunx

Dictionary entry	Language	Definition
iugo	Latin (lat)	I join, yoke.
con-	Latin (lat)	Used in compounds to indicate a being or bringing together of several objects. Used in compounds to indicate the completeness, perfecting of any act, and thus gives intensity to the signification of the simple word.
con	Latin (lat)
coniunx	Latin (lat)	Spouse, married partner, i.e. husband or wife.

Words with the same origin as coniunx