fickle
Prone to wavering
Fickle describes someone whose loyalties, affections, or preferences change unpredictably.
A fickle friend abandons you when someone more interesting comes along.
Fickle weather shifts without warning.
The word carries a note of criticism—fickleness suggests shallowness or unreliability rather than genuine change of heart.
Fame is fickle, fickle voters.
Untrustworthy, lacking loyalty
- unfaithfulBetraying a partner's trust
- inconstantProne to fluctuation
- treacherousDisloyal and dangerous
- falseNot matching reality
untrue · perfidious · two-faced · double-dealing · unreliable · untrustworthy · undependable · disloyal
Playfully fanciful or erratic
- impulsiveActing without deliberation
- erraticLacking regularity or consistency
- flightyErratic and unreliable
- mercurialProne to sudden change
temperamental · moody · unpredictable · changeable · volatile · vacillating · wavering · inconsistent
Capable of alteration
- variableProne to fluctuation
- unsettledNot yet resolved
- unpredictableCannot be anticipated
- shiftingChanging position or form
gusty · squally · temperamental · capricious · erratic · unstable · mercurial · inclement
Playfully romantic in manner
- coquettishPlayfully alluring in manner
- playerGame participant
- heartbreakerOne who causes romantic anguish
- uncommittedNot bound to anything
noncommittal · casual · detached · aloof · distant · straying · philandering · roving
Chance affecting outcomes
- chanceLikelihood of occurrence
- fatePredetermined course of events
- destinyPredetermined course of events
- serendipityAccidental fortunate discovery
happenstance · uncertainty · randomness · caprice · whim · vagary · vicissitude · reversal
faithless
Untrustworthy, lacking loyalty
- unfaithfulBetraying a partner's trust
- inconstantProne to fluctuation
- treacherousDisloyal and dangerous
false · untrue · perfidious · two-faced · double-dealing · unreliable · untrustworthy · undependable · disloyal · fair-weather
whimsical
Playfully fanciful or erratic
- impulsiveActing without deliberation
- erraticLacking regularity or consistency
- flightyErratic and unreliable
mercurial · temperamental · moody · unpredictable · changeable · volatile · vacillating · wavering · inconsistent · indecisive
changeable
Capable of alteration
- variableProne to fluctuation
- unsettledNot yet resolved
- unpredictableCannot be anticipated
shifting · gusty · squally · temperamental · capricious · erratic · unstable · mercurial · inclement · stormy
flirtatious
Playfully romantic in manner
- coquettishPlayfully alluring in manner
- playerGame participant
- heartbreakerOne who causes romantic anguish
uncommitted · noncommittal · casual · detached · aloof · distant · straying · philandering · roving · lothario
luck
Chance affecting outcomes
- chanceLikelihood of occurrence
- fatePredetermined course of events
- destinyPredetermined course of events
serendipity · happenstance · uncertainty · randomness · caprice · whim · vagary · vicissitude · reversal
- Inconsistencywishy-washy, flip-flop, unreliable, unpredictable, erratic
- commitment levelscommitted, dedicated, devoted, loyal, faithful
- indecisionindecision, indecisiveness, conflicted, hesitation, indecisive
- traitshonesty, ambitious, brave, calm, kindness
- betrayerstraitor, betrayer, backstabber, turncoat, double-crosser
- betrayalbackstab, betray, betrayal, traitor, backstabber
fickleconstant
Fixed, unvarying quantity
steady · steadfast · stable · unchanging · consistent
ficklereliable
Consistently performing as expected
dependable · trustworthy · predictable · certain · sure