Syllable
late Middle English: from an Anglo-Norman French alteration of Old French sillabe, via Latin from Greek sullabē, from sun- ‘together’ + lambanein ‘take’.
wiktionary
From Middle English syllable, sillable, syllabylle, sylabul, from Anglo-Norman sillable, from Old French sillebe, from Latin syllaba, from Ancient Greek συλλαβή(sullabḗ), from συλλαμβάνω(sullambánō, “I gather together”), from συν-(sun-, “together”) + λαμβάνω(lambánō, “I take”).
etymonline
syllable (n.)
late 14c., from Anglo-French sillable, alteration of Old French silabe "syllable" (12c., Modern French syllabe), from Latin syllaba, from Greek syllabē "that which is held together; a syllable, several sounds or letters taken together," i.e. "a taking together" of letters; from syllambanein "take or put together, collect, gather," from assimilated form of syn- "together" (see syn-) + stem of lambanein "to take" (see lemma). The unetymological -le apparently is by analogy with participle and principle.