Synonyms for Onyx:

• adj.

  •black (adjective)
  • coaler,
  • livid,
  • clouded,
  • pitch,
  • slate,
  • somber,
  • swart,
  • sloe,
  • inklike,
  • dusky,
  • stygian,
  • melanoid,
  • brunet,
  • coal,
  • sombrer,
  • swarthy,
  • murky,
  • Piceous,
  • obsidian,
  • raven,
  • starless,
  • pitch-dark,
  • dingy,
  • shadowy,
  • pitch dark,
  • Atramentous,
  • sombre,
  • slater,
  • charcoal,
  • pitch-black.
  •pitch-black (adjective)
  • pitchblack,
  • jettier,
  • pitch dark pitchy,
  • pitchdark pitchy,
  • jettiest.

• n.

  •
  • crystal,
  • ebony,
  • colors,
  • inky,
  • jet,
  • pitchy,
  • sable,
  • sooty,
  • jetty,
  • baguette.
  •gem (noun)
  • carbuncle,
  • hyacinth,
  • agate,
  • bloodstone,
  • star sapphire,
  • lapis lazuli,
  • diamond,
  • moonstone,
  • zircon,
  • aquamarine,
  • beryl,
  • garnet,
  • sardonyx,
  • gem,
  • jade,
  • opal,
  • amethyst,
  • emerald,
  • rose quartz,
  • topaz,
  • turquoise,
  • coral,
  • ruby,
  • sapphire.
  •substance (noun)
  • onyx.

• Other synonyms:

  •
  • ebon,
  • quartz.
  •Other relevant words:
  • dumb,
  • fatal,
  • peridot,
  • grim,
  • fateful,
  • banded gemstone,
  • semiprecious stone,
  • disgraceful,
  • brilliant,
  • chrysoprase,
  • disastrous,
  • evil,
  • sardine,
  • Turquois,
  • dirty,
  • gemstone,
  • heliotrope,
  • sard,
  • ghastly,
  • plasm,
  • chrysolite,
  • bare,
  • dark,
  • unclean,
  • cubic zirconia,
  • oriental,
  • jacinth,
  • girasol,
  • sunstone,
  • jasper,
  • Girasole,
  • alexandrite,
  • faint,
  • Spinelle,
  • spinel,
  • black stone,
  • dispiriting,
  • cat's eye,
  • hematite,
  • plasma,
  • tourmaline,
  • grisly,
  • dense,
  • bleak,
  • achromatic,
  • colored.

Antonyms for Onyx:

• adj.

  • black
    white.

Hypernym for Onyx:

• n.

  • substance
    sardonyx.

Hyponym for Onyx:

• n.

  • substance
    calcedony, chalcedony.