Where does “onklo” come from?

onklo (Esperanto) comes from German Onkel, from French oncle, from Middle French oncle, from Old French oncle, from Vulgar Latin aunclum, from Latin avunculus, from Proto-Indo-European h₂éwh₂os — maternal grandfather; maternal uncle.

onklo (Esperanto): uncle; uncle "or" aunt

Definitions

uncle; uncle "or" aunt

Ancestry of “onklo”, step by step

onklo traces back through two separate lines of ancestry.

via German Onkel

Step	Language	Word	Meaning
1	German	Onkel	uncle
2	French	oncle	uncle
3	Middle French	oncle	uncle
4	Old French	oncle	uncle
5	Vulgar Latin	aunclum	—
6	Latin	avunculus	maternal uncle, mother's brother; mother's...
7	Proto-Indo-European	h₂éwh₂os	maternal grandfather; maternal uncle

via English Uncle

Step	Language	Word	Meaning
1	English	Uncle	radiotelephony clear-code word for the letter U
2	Middle English	uncle	uncle (brother of one's parents)
3	Old French	uncle	Alternative form of oncle

Words derived from “onklo”

Every word from Proto-Indo-European h₂éwh₂os →Every word from Latin avunculus →Every word from Vulgar Latin aunclum →