Where does “contraindre” come from?

contraindre (Middle French) comes from Old French constraindre, from Latin constringere, from Latin constringo, from Latin con-, from Latin cum, from Old Latin com, from Proto-Italic kom, from Proto-Indo-European ḱóm — to bend; curve; arch; vault; to bow, bend, arch,...

Ancestry of “contraindre”, step by step

contraindre traces back through 3 separate lines of ancestry.

via Old French constraindre

Step	Language	Word	Meaning
1	Old French	constraindre	—
2	Latin	constringere	second-person singular future passive indicative...
3	Latin	constringo	I draw or bind together; I tie up; I hinder or...
4	Latin	con-	Used in compounds to indicate a being or bringing...
5	Latin	cum	with, along with; at; -fold
6	Old Latin	com	Alternative form of cum
7	Proto-Italic	kom	with, along, at
8	Proto-Indo-European	ḱóm	beside, near, by, with
9	Proto-Indo-European	ḱe	Deictic particle, here; Post-positional...
10	Middle English	kyt	—
11	German	kitt	putty certain kinds of cement used for fixing e.g. window panes
12	Old High German	kuti	—
13	Proto-West Germanic	kwidu	gum, resin
14	Proto-Germanic	kweduz	resin
15	Proto-Indo-European	gʷet-	resin, gum; to say, speak
16	Proto-Indo-European	gū-	to bend; curve; arch; vault; to bow, bend, arch,...

via Old French constreindre

Step	Language	Word	Meaning
1	Old French	constreindre	to constrain

via Old French contraindre

Step	Language	Word	Meaning
1	Old French	contraindre	—

Every word from Proto-Indo-European gū- →Every word from Proto-Indo-European gʷet- →Every word from Proto-Germanic kweduz →