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unstable
1 ENTRIES FOUND:
Learner's definition of UNSTABLE
[more unstable; most unstable]
: not stable不稳定的: such as
a : likely to change易变的
- unstable prices不稳定的价格
- unstable weather多变的天气
b : not emotionally or mentally healthy（情绪或精神）不稳定的
- She is emotionally/mentally unstable.她情绪/精神不稳定。
c : not held in a secure position : likely to move or fall易移动的；易倒下的；不稳固的
- an unstable tower/ladder不稳固的塔/梯子
d technical : having a chemical structure or physical state that changes easily（化学结构或物理状态）不稳定的
- an unstable nuclear reactor core不稳定的核反应堆堆芯
- an unstable element不稳定元素
unstable
adjective
un·sta·ble ˌən-ˈstā-bəl 
: not stable : not firm or fixed : not constant: such as
a
: not steady in action or movement : irregular
b
: wavering in purpose or intent : vacillating
e
: characterized by lack of emotional control
unstableness noun
Synonyms
Example Sentences
an unstable nuclear reactor core the minute we put the books down on the unstable desk, the whole stack went crashing to the floor
Recent Examples on the Web These are critical times for unstable programs in this meat-grinder of a league. 
Joseph Goodman | Jgoodman@al.com, al, 17 Sep. 2022 The researchers posit that an 83rd moon became unstable, and its orbit swung too close to Saturn. Joshua Hawkins, BGR, 16 Sep. 2022 This instability and the rise in power of Adolf Hitler, in an economically and politically unstable Germany, led to the start of another war in Europe. Caitlin Mclean, USA TODAY, 16 Sep. 2022 Then there is the mercurial and increasingly unstable balance of geopolitics driving millions from their homes and into refugee camps and migrant housing, which are fertile grounds for infectious diseases to spread. Time, 15 Sep. 2022 Housing advocates, however, say this approach runs counter to the intent of the voucher program by pushing the poorest residents into unstable neighborhoods with few social services or amenities. Giacomo Bologna, Washington Post, 14 Sep. 2022 That's considered an unstable way of operating a nuclear plant, which could lead to damage to key equipment including turbines and pumps. Karl Ritter, ajc, 11 Sep. 2022 That’s considered an unstable way of operating a nuclear plant, which could lead to damage to key equipment including turbines and pumps. Karl Ritter, Chicago Tribune, 11 Sep. 2022 But burdensome taxes and high costs of entry have created a crisis within the increasingly unstable market, which has been flooded in recent years by illicit growers and dealers selling their cannabis at cheaper prices. Mitch Koss, NBC News, 8 Sep. 2022 See More
Joseph Goodman | Jgoodman@al.com, al, 17 Sep. 2022 The researchers posit that an 83rd moon became unstable, and its orbit swung too close to Saturn. Joshua Hawkins, BGR, 16 Sep. 2022 This instability and the rise in power of Adolf Hitler, in an economically and politically unstable Germany, led to the start of another war in Europe. Caitlin Mclean, USA TODAY, 16 Sep. 2022 Then there is the mercurial and increasingly unstable balance of geopolitics driving millions from their homes and into refugee camps and migrant housing, which are fertile grounds for infectious diseases to spread. Time, 15 Sep. 2022 Housing advocates, however, say this approach runs counter to the intent of the voucher program by pushing the poorest residents into unstable neighborhoods with few social services or amenities. Giacomo Bologna, Washington Post, 14 Sep. 2022 That's considered an unstable way of operating a nuclear plant, which could lead to damage to key equipment including turbines and pumps. Karl Ritter, ajc, 11 Sep. 2022 That’s considered an unstable way of operating a nuclear plant, which could lead to damage to key equipment including turbines and pumps. Karl Ritter, Chicago Tribune, 11 Sep. 2022 But burdensome taxes and high costs of entry have created a crisis within the increasingly unstable market, which has been flooded in recent years by illicit growers and dealers selling their cannabis at cheaper prices. Mitch Koss, NBC News, 8 Sep. 2022 See More Word History
First Known Use
13th century, in the meaning defined above
Time Traveler
The first known use of unstable was in the 13th century Phrases Containing unstable
adjective¹
adjective²
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