Need another word that means the same as “unpredictable”? Find 27 synonyms and 30 related words for “unpredictable” in this overview.
The synonyms of “Unpredictable” are: irregular, unforeseeable, incalculable, uncertain, unsure, doubtful, dubious, in the balance, up in the air, random, arbitrary, erratic, moody, volatile, unstable, fickle, capricious, whimsical, temperamental, mercurial, changeable, variable, inconstant, undependable, unreliable, unmanageable, impulsive
According to the Oxford Dictionary of English, “unpredictable” as an adjective can have the following definitions:
| arbitrary | Based on random choice or personal whim, rather than any reason or system. A country under arbitrary government. |
| capricious | Changeable. A capricious summer breeze. |
| changeable | Able to be changed or exchanged. Cover the tables with changeable cloths. |
| doubtful | Not established as genuine or acceptable. The fire was of doubtful origin. |
| dubious | Open to doubt or suspicion. He has a dubious record indeed. |
| erratic | Not even or regular in pattern or movement; unpredictable. Her breathing was erratic. |
| fickle | Marked by erratic changeableness in affections or attachments. Fickle weather. |
| impulsive | Without forethought. He regretted his impulsive offer. |
| in the balance | Directed or bound inward. |
| incalculable | Not capable of being computed or enumerated. Incalculable riches. |
| inconstant | Frequently changing; variable or irregular. Inconstant affections. |
| irregular | Lacking continuity or regularity. Highly irregular behavior. |
| mercurial | Of or containing the element mercury. Gels containing organic mercurial compounds. |
| moody | Giving an impression of melancholy or mystery. He sat in moody silence. |
| random | Governed by or involving equal chances for each item. Are you going to take some random guy on Twitter s word. |
| temperamental | (of a person) liable to unreasonable changes of mood. They were firm friends in spite of temperamental differences. |
| uncertain | Subject to change. Everything is uncertain about the army. |
| undependable | Not worthy of reliance or trust. Evidence is scarce and often undependable. |
| unforeseeable | Incapable of being anticipated. Unforeseeable consequences. |
| unmanageable | Difficult or impossible to manage, manipulate, or control. His behaviour was becoming unmanageable at home. |
| unreliable | Dangerously unstable and unpredictable. Unreliable information. |
| unstable | Likely to give way; not stable. His rather unstable religious convictions. |
| unsure | Lacking self-confidence. She was feeling nervous unsure of herself. |
| up in the air | Getting higher or more vigorous. |
| variable | (of a quantity) able to assume different numerical values. Awards can be for variable amounts. |
| volatile | (of a person) liable to display rapid changes of emotion. A volatile situation with troops and rioters eager for a confrontation. |
| whimsical | Determined by chance or impulse or whim rather than by necessity or reason. The victim of whimsical persecutions. |
| anomalous | Deviating from what is standard, normal, or expected. An anomalous situation. |
| arbitrary | (of power or a ruling body) unrestrained and autocratic in the use of authority. An arbitrary penalty. |
| arrhythmic | Not rhythmic; without rhythm or regularity. An arrhythmic heartbeat. |
| capricious | Changeable. Authoritarian rulers are frequently capricious. |
| changeable | Subject to change. A changeable climate. |
| episodic | Of writing or narration; divided into or composed of episodes. The book is episodic and the incidents don t always hang together. |
| erratic | Having no fixed course. The source of stone for the whetstones may have been glacial erratics. |
| fickle | Changing frequently, especially as regards one’s loyalties or affections. Fickle friends. |
| impulse | A change of momentum produced by an impulse equivalent to the average value of the force multiplied by the time during which it acts. I had an almost irresistible impulse to giggle. |
| impulsive | Characterized by undue haste and lack of thought or deliberation. An impulsive force. |
| inconstant | Frequently changing; variable or irregular. Inconstant affections. |
| infrequent | Not occurring often; rare. Her visits were so infrequent. |
| insecure | Not firm or firmly fixed; likely to fail or give way. A financially insecure period. |
| intermittent | Stopping and starting at irregular intervals. Intermittent rain. |
| irregular | A member of an irregular military force. Irregular hiring practices. |
| mercurial | Liable to sudden unpredictable change. Mercurial twists of temperament. |
| occasional | (of furniture) made or adapted for use on a particular occasion or for infrequent use. Occasional freelancer seeks full time position. |
| patchy | Existing or happening in small, isolated areas. A patchy essay. |
| quicksilver | Liable to sudden unpredictable change. A quicksilver character cool and willful at one moment utterly fragile the next. |
| random | Lacking any definite plan or order or purpose; governed by or depending on chance. The class was hard but he was so random that it was always fun. |
| shaky | Shaking or trembling. A cracked dangerously shaky table. |
| sporadic | Occurring at irregular intervals or only in a few places; scattered or isolated. Sporadic fighting broke out. |
| spotty | Of uneven quality; patchy. His spotty record on the environment. |
| uncertain | Not established beyond doubt; still undecided or unknown. Plans are still uncertain. |
| unreliable | Not able to be relied upon. He s lazy and unreliable. |
| unsettled | Still in doubt. One question remains unsettled. |
| unstable | Likely to change or fail; not firmly established. He was mentally unstable. |
| unsteady | Not regular in pitch or rhythm. Nathan pushed the mug into her unsteady hand. |
| variable | The region of light variable winds to the north of the north east trade winds or in the southern hemisphere between the south east trade winds and the westerlies. Awards can be for variable amounts. |
| volatile | A volatile substance a substance that changes readily from solid or liquid to a vapor. Volatile solvents. |
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