Alike
Old English gelīc, of Germanic origin; related to Dutch gelijk and German gleich, reinforced in Middle English by Old Norse álíkr (adjective) and álíka (adverb).
wiktionary
From Middle English alike, alyke, alyche, aleche, and earlier ilike, ilik, ylike, yliche, ylich, elik, ȝelic, from Old English ġelīċ(“like; alike; similar; equal”) and Old English onlīċ, anlīċ("like; similar; equal"; > Middle English anlike, onlich (compare German ähnlich), reinforced by Old Norse álíkr, from Proto-Germanic *galīkaz(“alike, similar”). Cognate with Scots elyke, alyke(“like, alike”), Saterland Frisian gliek(“like, alike”), West Frisian lyk, gelyk(“like, alike”), Dutch gelijk(“like, alike”), German Low German liek, gliek(“like, alike”), German gleich(“equal, like”), Danish lig(“alike”), Swedish lik(“like, similar”), Norwegian lik(“like, alike”), Icelandic líkur(“alike, like, similar”).
etymonline
alike (adj.)
"like one another, very similar," c. 1300, aliche, ylike, ilike, from Old English anlig, onlic "similar, resembling;" from Old English an, on (see a- (1) + like (adj.), which is related to Old English lic "body, corpse."
The notion is "having a corresponding form (body)." The more usual Germanic compound is represented by Old English gelic, from Proto-Germanic *galikam "associated form" (source also of Old Frisian gelik, Dutch gelijk, German gleich, Gothic galeiks, Old Norse glikr). As an adverb, late Old English onlice, gelice.
