What is the origin of sequacious?
The adjective sequacious comes from Latin sequac-, stem of sequāx “following closely or eagerly, disposed to be a follower, (of materials) responsive to manipulation or control, pliant” (sequāx lacks the sense “following smoothly or logically”). Sequāx is formed from the verb sequī “to follow” and the adjective suffix -āx (inflectional stem -āc-). Sequī is a Latin formation from the very widespread Proto-Indo-European root sekw-, sokw- “to follow,” which appears in Sanskrit, Greek and the Celtic and Germanic languages. Other Latin derivatives of sekw-, sokw- include the noun socius “follower, partner, ally” (from sokwyos) with its derivative adjective sociālis, source of English social. In Germanic, sokwyos becomes sagjaz “follower, retainer, warrior,” becoming in Old English secg, a noun used only in poetry. Sequacious entered English in the 17th century.