endly
Final, terminal; of or pertaining to the end; conclusive.
rare
Of unitie, shewing of our keeping of the sea: with an endly or finall processe of peace by authoritie.
Where it comes from
From Middle English endly, endely (“final”), equivalent to end + -ly. Compare Dutch eindelijk (“final”), German endlich (“final”), Middle High German endelīch (“final”).
Adapted from the Wiktionary entry endly (CC BY-SA 4.0).