Synonyms for Sick as a dog:

• adj.

  •ailing (adjective)
  • enfeebled,
  • under the weather,
  • indisposed,
  • sickly,
  • wasting,
  • run down,
  • weak,
  • diseased,
  • feeble,
  • rocky,
  • debilitated,
  • below par,
  • down.
  •green around the gills (adjective)
  • crummy,
  • throwing up,
  • vomiting,
  • blah,
  • shaky,
  • pale,
  • nauseated,
  • miserable.
  •ill (adjective)
  • peaked,
  • afflicted,
  • unhealthy,
  • rotten,
  • out of sorts,
  • run-down,
  • infirm,
  • woozy,
  • poorly.
  •laid-up (adjective)
  • laidup.
  •Other relevant words: (adjective)
  • ailing,
  • green around the gills,
  • on sick list,
  • broken down,
  • queasy,
  • laid low,
  • got the bug,
  • in a bad way,
  • feeling awful,
  • laid-up,
  • not so hot,
  • Bummed,
  • in poor health,
  • feeling terrible,
  • in firm,
  • sick to one's stomach,
  • sick,
  • running temperature,
  • a wreck,
  • under medication,
  • off one's feet,
  • green around gills,
  • down with,
  • feeling rotten,
  • ill,
  • sick as dog,
  • hospitalized,
  • weakest,
  • unwell.
  •queasy (adjective)
  • uncertain,
  • uneasy,
  • pukish,
  • uncomfortable,
  • concerned,
  • restless,
  • anxious,
  • ill at ease,
  • troubled,
  • groggy,
  • queer,
  • worried,
  • bilious,
  • up set,
  • squeamish,
  • fidgety,
  • Qualmish,
  • upset.
  •sick (adjective)
  • imperfect,
  • green,
  • incurable,
  • declining,
  • confined,
  • tottering,
  • frail,
  • infected,
  • rickety,
  • feverish,
  • suffering,
  • wobbly,
  • impaired,
  • defective,
  • bedridden,
  • mean,
  • disordered,
  • invalid,
  • lousy,
  • funny,
  • delicate.
  •unwell (adjective)
  • not feeling well.

• Other synonyms:

  •Other relevant words (noun):
  • laid up.

Antonyms for Sick as a dog:

• adj.

  • ailing
    fit, well, strong, able, sound, hearty, healthy, happy.
  • ill
    good.
  • queasy
    satisfied, comfortable, content.
  • sick
    gentle, moral, perfect, undiseased, clean, nice, pleased.