Where does “xustamente” come from?

xustamente (Galician) comes from Galician xusto, from Old Portuguese justo, from Latin iūstus, from Latin iūs, from Latin dīcō, from Latin -tiō, from Latin dissertātiō, from Latin dissertus — small stone, pebble; gravel, rubble.

xustamente (Galician): justly, fairly

Definitions

justly, fairly

Ancestry of “xustamente”, step by step

Step	Language	Word	Meaning
1	Galician	xusto	just, fair
2	Old Portuguese	justo	—
3	Latin	iūstus	just, righteous
4	Latin	iūs	law, right
5	Latin	dīcō	to say, talk, speak, utter, mention
6	Latin	-tiō	tion, -ation, -ing
7	Latin	dissertātiō	(spoken) dissertation, discourse, disquisition
8	Latin	dissertus	arranged, disposed; explained
9	Latin	disserere	second-person singular future passive indicative...
10	Latin	dis-	asunder, apart, in two; reversal, removal;...
11	Latin	calceus	shoe
12	Latin	calx	limestone; chalk; the finish line
13	Ancient Greek	χάλιξ	small stone, pebble; gravel, rubble

Every word from Ancient Greek χάλιξ →Every word from Latin -tiō →Every word from Latin dis- →