Where does “enclitically” come from?

enclitically (English) comes from English ally, from Middle English allie, from Middle English allien, from Old French alier, from Latin alligō, from Latin ad-, from Latin īn-, from Latin în — in.

enclitically (English): In an enclitic manner; by throwing the accent...

Definitions

In an enclitic manner; by throwing the accent...

Ancestry of “enclitically”, step by step

enclitically traces back through two separate lines of ancestry.

via English ally

Step	Language	Word	Meaning
1	English	ally	To unite, or form a connection between, as...
2	Middle English	allie	The state of having marital or family relations...
3	Middle English	allien	To ally; to make a pact or confederacy; To marry...
4	Old French	alier	to unite; to join together
5	Latin	alligō	to bind to, up or around something, tie, fetter, fasten; bandage
6	Latin	ad-	to; usually prefixed to verbs, in which cases it...
7	Latin	īn-	un-, non-, not
8	Latin	în	in, at, on, upon, from (space)
9	Latin	en	lookǃ beholdǃ; reallyǃ?; come onǃ
10	Proto-Italic	en	in
11	Proto-Indo-European	h₁én	in

via English enclitic

Step	Language	Word	Meaning
1	English	enclitic	A clitic that joins with the preceding word...
2	Late Latin	encliticus	—
3	Ancient Greek	ἐγκλιτικός	inclined towards
4	Ancient Greek	ἔγκλισις	inclination; slope; defeat, failure; displacement
5	Ancient Greek	ἐγκλίνω	lean on; to incline
6	Ancient Greek	ἐν	in, on, at; among; in, at, or during the time of
7	Ancient Greek	δέρμα	skin, hide
8	Ancient Greek	γλυφή	carving, carved work; hole cut
9	Ancient Greek	-ῐ́ᾱ	{{l\|en\|-ia}}; "suffix forming abstract feminine...
10	Proto-Indo-European	-íh₂	—
11	Proto-Indo-European	-h₂	Creates collective nouns, which refer to groups...

Every word from Proto-Indo-European h₁én →Every word from Latin īn- →Every word from Latin ad- →