Synonyms of the word

inconstant

• adj. Not constant; wavering.

changeable

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

changeful

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

false

• adj. Untrue, not factual, factually incorrect.
• adj. Based on factually incorrect premises.
• adj. Spurious, artificial.
• adj. (logic) Of a state in Boolean logic that indicates a negative result.
• adj. Uttering falsehood; dishonest or deceitful.
• adj. Not faithful or loyal, as to obligations, allegiance, vows, etc.; untrue; treacherous.
• adj. Not well founded; not firm or trustworthy; erroneous.
• adj. Not essential or permanent, as parts of a structure which are temporary or supplemental.
• adj. (music) Out of tune.
• adv. Not truly; not honestly; falsely.
• n. One of two options on a true-or-false test.

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.

unfaithful

• adj. Not having religious faith.
• adj. Not keeping good faith; disloyal; not faithful.
• adj. Not honest or upright.
• adj. (translation studies) which doesn't faithfully render the meaning of the source language; incorrect.
• adj. Adulterous.

unstable

• adj. Having a strong tendency to change.
• adj. Fluctuating; not constant.
• adj. Fickle.
• adj. Unpredictable.
• adj. (chemistry) Readily decomposable.
• adj. (physics) Radioactive, especially with a short half-life.
• v. (transitive) To release (an animal) from a stable.

untrue

• adj. False; not true.

variable

• adj. Able to vary.
• adj. Likely to vary.
• adj. Marked by diversity or difference.
• adj. (mathematics) Having no fixed quantitative value.
• adj. (biology) Tending to deviate from a normal or recognized type.
• n. Something that is variable.
• n. Something whose value may be dictated or discovered.
• n. (mathematics) A quantity that may assume any one of a set of values.
• n. (mathematics) A symbol representing a variable.
• n. (programming) A named memory location in which a program can store intermediate results and from which…
• n. (astronomy) A variable star.
• n. (nautical) A shifting wind, or one that varies in force.
• n. (nautical, in the plural) Those parts of the sea where a steady wind is not expected, especially the parts…

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.