Where does “Stiwwel” come from?

Stiwwel (Luxembourgish) comes from Middle High German stival, from Old French estival, from Latin aestivālis, from Latin aestīvus, from Latin autumnus, from Latin auctumnus, from Proto-Indo-European h₃ewǵ- — cold.

Stiwwel (Luxembourgish): boot

Definitions

boot

Ancestry of “Stiwwel”, step by step

Step	Language	Word	Meaning
1	Middle High German	stival	boot
2	Old French	estival	—
3	Latin	aestivālis	summer
4	Latin	aestīvus	summer
5	Latin	autumnus	autumn, fall; autumn; autumnal
6	Latin	auctumnus	autumn; autumn; autumnal
7	Proto-Indo-European	h₃ewǵ-	cold

Every word from Proto-Indo-European h₃ewǵ- →Every word from Latin auctumnus →Every word from Latin autumnus →