unpredictable

adj.
Difficult to foretell or foresee: unpredictable test results; unpredictable behavior.

n.
Something difficult or impossible to foretell or foresee.

unpredictability un'pre·dict'a·bil'i·ty n.
unpredictably un'pre·dict'a·bly adv.

adjective

Following no predictable pattern: capricious, changeable, erratic, fantastic, fantastical, fickle, freakish, inconsistent, inconstant, mercurial, temperamental, ticklish, uncertain, unstable, unsteady, variable, volatile, whimsical. See change/persist, continue/stop/pause.

adj

Definition: changeable
Antonyms: constant, predictable, unchanging, unvarying

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Note: click on a word meaning below to see its connections and related words.

The adjective has 3 meanings:

Meaning #1: impossible to foretell
  Antonym: predictable (meaning #1)

Meaning #2: unknown in advance

Meaning #3: not occurring at expected times
  Synonym: irregular

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Dansk (Danish)
adj. - uforudsigelig, uberegnelig

Nederlands (Dutch)
onvoorspelbaar, onberekenbaar

Français (French)
adj. - imprévisible, incertain

Deutsch (German)
adj. - unberechenbar

Ελληνική (Greek)
adj. - απρόβλεπτος, ανερμάτιστος, εξωφρενικός

Italiano (Italian)
imprevedibile

Português (Portuguese)
adj. - imprevisível

Русский (Russian)
непредсказуемый

Español (Spanish)
adj. - imprevisible, antojadizo

Svenska (Swedish)
adj. - oförutsägbar, oberäknelig

中文（简体）(Chinese (Simplified))
不可预知的

中文（繁體）(Chinese (Traditional))
adj. - 不可預知的

한국어 (Korean)
adj. - 예측할 수 없는

日本語 (Japanese)
adj. - 予言できない, 予測できない
n. - 予言できないこと

العربيه (Arabic)
‏(صفه) لا يمكن التنبؤ به‏

עברית (Hebrew)
adj. - ‮בלתי צפוי, שאין לחזותו מראש‬

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