Synonyms for Know-nothing:

• adj.

  •empty-headed (adjective)
  • harebrained,
  • frivolous,
  • featherbrained,
  • illiterate,
  • inane,
  • giddy,
  • vacuous,
  • vacant,
  • silly,
  • unschooled,
  • stupid,
  • ignorant,
  • skittish,
  • dizzy,
  • brainless.
  •uneducated (adjective)
  • uncultured,
  • uncultivated,
  • unrefined,
  • unlearned.

• n.

  •ignoramus (noun)
  • fool,
  • dimwit,
  • numbskulls,
  • idiot,
  • moron,
  • dunce,
  • numbskull,
  • imbecile,
  • know-nothings,
  • blockhead.
  •know-nothing (noun)
  • uneducated person.

• Other synonyms:

  •Other relevant words:
  • nimrod,
  • Mome,
  • birdbrain,
  • partisan,
  • dabbler,
  • dummy,
  • naive,
  • superpatriotic,
  • donkey,
  • nescient,
  • rude,
  • sexist,
  • unintelligent,
  • nonobjective,
  • interested,
  • unacquainted,
  • warped,
  • Ninnyhammer,
  • schlub,
  • chauvinistic,
  • middlebrow,
  • nincompoop,
  • Prepossessed,
  • ratbag,
  • biassed,
  • Unconversant,
  • benighted,
  • unilluminated,
  • woodenhead,
  • greenhorn,
  • racist,
  • uninstructed,
  • greeny,
  • opinionated,
  • bubblehead,
  • Hardhead,
  • pinhead,
  • antiblack,
  • deadhead,
  • Noddy,
  • yahoo,
  • be green,
  • clod,
  • dork,
  • dunderhead,
  • doctrinaire,
  • uninformed,
  • dummkopf,
  • inexperienced,
  • dope,
  • unenlightened,
  • dum-dum,
  • headed,
  • dolt,
  • xenophobic,
  • Influenced,
  • unversed,
  • chowderhead,
  • be ignorant,
  • tenderfoot,
  • loggerhead,
  • Chucklehead,
  • greener,
  • Clodpoll,
  • Stupe,
  • Unapprized,
  • nit,
  • dumbhead,
  • one-sided,
  • Swayed,
  • uncomprehending,
  • biased,
  • unknowing,
  • mutt,
  • gauche,
  • agnostic,
  • prat,
  • groping,
  • fathead,
  • golem,
  • callow,
  • jaundiced,
  • unacquainted with,
  • dumb,
  • uninitiated,
  • yo-yo,
  • partial,
  • undetached.

Antonyms for Know-nothing:

• adj.

  • empty-headed
    intelligent, cognizant, smart, sensible, slick.
  • uneducated
    learned, educated, taught, lettered, literate.

• n.

  • ignoramus
    brain.