Synonyms of the word

fickle

• adj. Quick to change one’s opinion or allegiance; insincere; not loyal or reliable.
• adj. (figuratively) changeable.
• v. (transitive) To deceive, flatter.
• v. (transitive, Britain dialectal) To puzzle, perplex, nonplus.

changeable

• adj. Capable of being changed.
• adj. Subject to sudden or frequent changes.

changeful

• adj. (rare) Changing frequently; very susceptible to change; variable; fickle.

erratic

• adj. unsteady, random; prone to unexpected changes; not consistent.
• adj. Deviating from the common course in opinion or conduct; eccentric; odd.
• n. (geology) A rock moved from one location to another, usually by a glacier.
• n. Anything that has erratic characteristics.

inconstant

• adj. Not constant; wavering.

mercurial

• n. (obsolete) Any of the plants known as mercury.
• n. (astrology) Someone born under the influence of Mercury.
• n. (now historical) A preparation of mercury, especially as a treatment for syphilis.
• adj. (often capitalized, see Mercurial) Pertaining to the planet Mercury.
• adj. (often capitalized, see Mercurial) Pertaining to the Roman god Mercury, the god of trade; hence, money-making;…
• adj. (astrology) Born under the influence of the planet Mercury, and having such characteristics.
• adj. Of, or pertaining to the element mercury; containing mercury; caused by the action of mercury or quicksilver.
• adj. Having a volatile or lively character; quick-witted, changeable, animated.
• adj. Volatile, changeable.

quicksilver

• n. The metal mercury.
• n. (colloquial) An amalgam of mercury and tin applied to the backs of mirrors, quicksilvering.
• adj. Unpredictable, erratic or fickle; mercurial.
• v. To overlay with quicksilver.
• v. To treat with quicksilver.

volatile

• adj. (physics) evaporating or vaporizing readily under normal conditions.
• adj. (of a substance, informal) explosive.
• adj. (of a price etc) variable or erratic.
• adj. (of a person) quick to become angry or violent.
• adj. fickle.
• adj. temporary or ephemeral.
• adj. (of a situation) potentially violent.
• adj. (computing, of a variable) having its associated memory immediately updated with any changes in value.
• adj. (computing, of memory) whose content is lost when the computer is powered down.
• adj. (obsolete) Passing through the air on wings, or by the buoyant force of the atmosphere; flying; having…
• n. A chemical or compound that changes into a gas easily.