Where does “guste” come from?

guste (Middle English) comes from Esperanto ĝusta, from French juste, from Old French juste, from Latin iūstus, from Latin iūs, from Latin dīcō, from Latin -tiō, from Latin dissertātiō — small stone, pebble; gravel, rubble.

Ancestry of “guste”, step by step

guste traces back through two separate lines of ancestry.

via Esperanto ĝusta

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

via Latin gustāre

Step	Language	Word	Meaning
1	Latin	gustāre	—

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