Definition for Mercurial:

• Sprightly; vivacious; containing mercury.

Synonyms for Mercurial:

• adj.

  •agile (adjective)
  • frisky,
  • alert,
  • active,
  • fleet,
  • prompt,
  • swift,
  • vivacious,
  • quick,
  • rapid,
  • sharp,
  • spry,
  • clever,
  • winged,
  • brisk,
  • energetic.
  •capricious (adjective)
  • freakish,
  • yo-yo,
  • whimsical,
  • quirky,
  • crotchety,
  • mutable,
  • moody,
  • changeful,
  • fitful,
  • flaky,
  • temperamental,
  • wayward,
  • flighty,
  • fanciful.
  •changeable (adjective)
  • modifiable,
  • inconstant,
  • reformable,
  • skittish,
  • convertible,
  • protean,
  • unsteady,
  • unreliable,
  • variable,
  • changeable,
  • Transposable,
  • flighty,
  • irresolute,
  • restless,
  • fluid,
  • mutable,
  • flexible,
  • uncertain,
  • vagrant,
  • alterable,
  • spasmodic,
  • transitional,
  • transformable,
  • unstable,
  • shifting,
  • ever-changing,
  • adaptable,
  • adjustable,
  • unsettled,
  • changeful,
  • vacillating,
  • wavering,
  • Vicissitudinous,
  • volatile,
  • movable,
  • varying,
  • fickle,
  • irresponsible,
  • indecisive,
  • precarious,
  • versatile.
  •erratic (adjective)
  • dubious,
  • desultory,
  • nomadic,
  • eccentric,
  • roving,
  • planetary,
  • inconsistent,
  • rambling.
  •excitable (adjective)
  • hasty,
  • excitable,
  • galvanic,
  • emotional,
  • fidgety,
  • high-strung,
  • reckless,
  • impetuous,
  • quick-tempered,
  • testy,
  • nervous,
  • edgy,
  • uncontrolled,
  • enthusiastic,
  • hysterical,
  • touchy.
  •fickle (adjective)
  • frivolous,
  • coquettish,
  • quicksilver,
  • unfaithful,
  • faithless.
  •fleet (adjective)
  • breakneck,
  • agile,
  • flying,
  • expeditious,
  • nimble-footed,
  • nimble,
  • fast,
  • speedy.
  •flighty (adjective)
  • scatterbrained,
  • wild,
  • giddy.
  •fluid (adjective)
  • flexible,
  • indefinite,
  • adjustable.
  •hasty (adjective)
  • quick.
  •mercurial (adjective)
  • irrepressible,
  • sprightly,
  • movable,
  • gaga,
  • capricious,
  • fickle,
  • variable,
  • effervescent,
  • lubricious,
  • unstable,
  • buoyant,
  • irregular,
  • flaky,
  • lively,
  • mad,
  • impulsive,
  • ticklish,
  • volatile,
  • mobile,
  • expansive,
  • changeable,
  • yo-yo,
  • bubbleheaded,
  • elastic,
  • blowing hot and cold,
  • up-and-down,
  • inconstant,
  • gay,
  • unpredictable,
  • fluctuating,
  • erratic,
  • spirited,
  • quicksilver,
  • lighthearted,
  • resilient.
  •sensitive (adjective)
  • excitable.
  •temperamental (adjective)
  • temperamental.
  •tottery (adjective)
  • tottery.

• n.

  •
  • animated,
  • active,
  • lively,
  • energetic,
  • alive.
  •
  • freakish,
  • temperamental,
  • ticklish,
  • schizophrenic,
  • uncertain,
  • whimsical,
  • unpredictable,
  • fantastical,
  • capricious,
  • schizoid,
  • fantastic,
  • inconsistent.
  •mercurial (noun)
  • erratic,
  • changeable,
  • quicksilver,
  • fickle,
  • changeful.
  •variable (noun)
  • irregular,
  • fluctuating.

• Other synonyms:

  •
  • fast.
  •
  • schizoid,
  • unpredictable,
  • ideal.
  •
  • whimsical,
  • schizophrenic,
  • inconsistent,
  • enthusiastic,
  • fantastical,
  • capricious.
  •
  • ticklish,
  • freakish.
  •
  • fantastic.
  •
  • uncertain.
  •changeful
  • changing.
  •nimble
  • agile.
  •quick
  • rapid.
  •Other relevant words:
  • effervescent,
  • Deviating,
  • speedily,
  • impetuous,
  • ebullient,
  • sharply,
  • bubbleheaded,
  • galloping,
  • gay,
  • buoyantly,
  • erratically,
  • breezy,
  • pert,
  • divergent,
  • shifty,
  • ingenious,
  • electric,
  • gaily,
  • ragged,
  • impulsive,
  • motive,
  • gaga,
  • fitful,
  • at loose ends,
  • chafing,
  • spirited,
  • crotchety,
  • headlong,
  • enthusiastic,
  • Livelily,
  • flaky,
  • vagrant,
  • flip,
  • feverish,
  • mad,
  • indefinite,
  • lubricious,
  • Unequable,
  • peppy,
  • wavy,
  • unaccountable,
  • capricious,
  • alter,
  • bouncy,
  • adroit,
  • gilt,
  • scatterbrained,
  • jerky,
  • bouncing,
  • resilient,
  • flirtatious,
  • displace,
  • frisky,
  • replace,
  • fence-straddling,
  • up-and-down,
  • yo-yo,
  • wishy-washy,
  • spanking,
  • motley,
  • lighthearted,
  • agile,
  • cuprous,
  • eccentric,
  • disloyal,
  • activistic,
  • irresponsible,
  • chameleon-like,
  • nimble,
  • uncertain,
  • mazy,
  • mobile,
  • touchy,
  • faddish,
  • smacking,
  • leaden,
  • fleetly,
  • breakneck,
  • desultory,
  • hair-trigger,
  • erose,
  • Mercurially,
  • indecisive,
  • tin,
  • flickering,
  • dubious,
  • tergiversating,
  • galvanic,
  • whimsical,
  • vague,
  • toying,
  • swiftly,
  • adrift,
  • lightly,
  • inconsistent,
  • steel,
  • pliant,
  • merrily,
  • divaricate,
  • bright,
  • spiritedly,
  • excitable,
  • roman deity,
  • bronze,
  • apprehensive,
  • fence-sitting,
  • hasty,
  • energetic,
  • silver,
  • uneven,
  • skittish,
  • chipper,
  • active,
  • disturb,
  • wayward,
  • nervous,
  • lissome,
  • sharp,
  • brassy,
  • ideal,
  • hastily,
  • moving,
  • permute,
  • alternating,
  • edgy,
  • Ferruginous,
  • infirm,
  • plastic,
  • giddy,
  • bubbly,
  • unresolved,
  • telegraphic,
  • steely,
  • unorthodox,
  • double-minded,
  • aureate,
  • amorphous,
  • transferable,
  • rapid,
  • undependable,
  • jumpy,
  • expansive,
  • silver-plated,
  • elastic,
  • Light-legged,
  • Eagle-winged,
  • insecure,
  • ticklish,
  • coquettish,
  • deviative,
  • actively,
  • unreliable,
  • commute,
  • pluralistic,
  • translate,
  • nonconformist,
  • nonuniform,
  • frivolous,
  • portable,
  • untrustworthy,
  • nickel,
  • militant,
  • vivacious,
  • flying,
  • Vicissitudinary,
  • unfixed,
  • Cupreous,
  • light-footed,
  • wanton,
  • perky,
  • changing,
  • schizophrenic,
  • suddenly,
  • vivid,
  • quicksilver,
  • blowing hot and cold,
  • running,
  • express,
  • reckless,
  • unquiet,
  • highly strung,
  • promptly,
  • clever,
  • fast,
  • gladly,
  • irrepressible,
  • of two minds,
  • Displaceable,
  • jauntily,
  • quirky,
  • shapeless,
  • variform,
  • Unstaid,
  • Pewtery,
  • various,
  • undecided,
  • supersede,
  • double-quick,
  • brisk,
  • iron,
  • sprightly,
  • smartly,
  • expeditiously,
  • emotional,
  • quick,
  • formless,
  • unequal,
  • unpredictable,
  • ironlike,
  • moody,
  • quick-tempered,
  • spineless,
  • Flitting,
  • testy,
  • ambivalent,
  • winged,
  • gold-filled,
  • tottery,
  • irregular,
  • full of life,
  • restlessly,
  • Nickeline,
  • fanciful,
  • zingy,
  • fussy,
  • roving,
  • snappy,
  • Aliped,
  • hot-blooded,
  • fleet,
  • Hustling,
  • animated,
  • expeditious,
  • shuffling,
  • diversified,
  • planetary,
  • dashing,
  • gold-plated,
  • wandering,
  • vary,
  • Diversiform,
  • buoyant,
  • motile,
  • schizoid,
  • freakish,
  • lively,
  • unfaithful,
  • racy,
  • brass,
  • fluctuating,
  • wild,
  • quickly,
  • full of pep,
  • negotiable,
  • fantastical,
  • jagged,
  • Nickelic,
  • vivaciously,
  • variegated,
  • restive,
  • nimble-footed,
  • undisciplined,
  • unsure,
  • Unsteadfast,
  • Motory,
  • activist,
  • spry,
  • rough,
  • fantastic,
  • in motion,
  • uncontrolled,
  • precipitate,
  • hysterical,
  • metallic element,
  • transportable,
  • labile,
  • mercurous,
  • terrestrial planet,
  • lead,
  • light,
  • unformed,
  • cunning,
  • wavery,
  • Deviatory,
  • silvery,
  • copper,
  • dizzy,
  • golden,
  • spasmodic,
  • tinny,
  • afloat,
  • faithless,
  • different,
  • brazen,
  • alive,
  • swift,
  • unsystematic,
  • undetermined,
  • high-strung,
  • pewter,
  • sporadic,
  • rambling,
  • bronzy,
  • metal,
  • nonstandard,
  • inferior planet,
  • temperamental,
  • speedy,
  • unrestrained,
  • jovially,
  • coppery,
  • erratic,
  • fidgety,
  • rapidly,
  • alert,
  • distortable,
  • disorderly,
  • readily,
  • chameleonic,
  • live,
  • ferrous,
  • hurried,
  • choppy,
  • transitional,
  • gold,
  • vacillate,
  • nomadic,
  • prompt.

Antonyms for Mercurial:

• adj.

  • agile
    clumsy, stiff, brittle.
  • capricious
    steady, steadfast, staid, dependable, sensible, constant.
  • changeable
    changeless, certain, reliable, fixed, undeviating, stable, lasting, sure.
  • erratic
    predictable, consistent, unchanging, regular, definite.
  • excitable
    easy, insensitive, laid-back, easy-going, passive, uninspired, unexcitable.
  • fickle
    cognizant, faithful, aware.
  • fleet
    slow.
  • flighty
    responsible.
  • fluid
    inflexible.
  • mercurial
    unchangeable, calm, unperturbable, unvarying, tranquil.
  • Other antonyms:
    permanent, immutable, even, persistent, trustworthy, trusty, durable, predictable, equable, invariable, reliable, tried, tried and true, sure, dependable, uniform, abiding, true, lasting.