Where does “allenig” come from?

allenig (Dutch) comes from Dutch alleen, from Middle Dutch allêne, from Middle Dutch al, from Old Dutch āl, from Proto-West Germanic all, from Proto-Germanic allaz, from Proto-Indo-European h₂él- — to grow, nourish.

Ancestry of “allenig”, step by step

Step	Language	Word	Meaning
1	Dutch	alleen	alone, by oneself; lonely; only, exclusively
2	Middle Dutch	allêne	only, just
3	Middle Dutch	al	all, all of; completely; even though, no matter...
4	Old Dutch	āl	—
5	Proto-West Germanic	all	all
6	Proto-Germanic	allaz	all
7	Proto-Indo-European	h₂él-	to grow, nourish

Every word from Proto-Indo-European h₂él- →