unstable

动词 v. 形容词 adj.
中文释义

英文释义

动词 v.
  1. To release (an animal) from a stable. transitive
    — When the last tune of music floated from the fleet, he unstabled his quarter horse and headed for the coastal road leading west and north on his circuit.
形容词 adj.
  1. Not stable.
    — unstable foundation
  2. Having a strong tendency to change.
    — The dawn of the oil age was fairly recent. Although the stuff was used to waterproof boats in the Middle East 6,000 years ago, extracting it in earnest began only in 1859 after an oil strike in Pennsylvania.[…]It was used to make kerosene, the main fuel for artificial lighting after overfishing led to a shortage of whale blubber. Other liquids produced in the refining process, too unstable or smoky for lamplight, were burned or dumped.
  3. Fluctuating; not constant.
    — politically unstable
  4. Fickle. figuratively
  5. Unpredictable. figuratively
    — All of the characters in Rocko's Modern Life are anthropomorphic animals of varying species, the vast majority of whom are mentally unstable. Murray said that he matched personalities of his characters to the various animals in the series to form a social caricature.
  6. Readily decomposable.
    — chemically unstable
  7. Radioactive, especially with a short half-life.

词形变化

more unstable comparative most unstable superlative unstables present,singular,third-person unstabling participle,present unstabled participle,past unstabled past

词汇关系

近义词
unsteady wobbly
反义词
stable
衍生词
emotionally unstable personality disorder unstable equilibrium
相关词
instability unstability

词源

词源 1
From Middle English unstable; equivalent to un- (not) + stable.
词源 2
Etymology tree
Proto-Indo-European *h₂ent-
Proto-Indo-European *-s
Proto-Indo-European *h₂éntsder.
Proto-Germanic *anda-
Proto-West Germanic *anda-
Old English and-
Old English on-
Middle English on-
English un-
English stable
English unstable
From un- (reversive prefix) + stable.
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