불안정이 · 불안정을
instability, insecurity
Example
요즘 경제가 불안정해서 사람들이 돈을 잘 안 써요.
The economy is unstable these days, so people aren't spending much money.
Word parts
불 not+안 peaceful+정 settled
Literally 'not peaceful and settled'.
Good to know
불- negates Sino words (불안정, 불평등, 불공평), but becomes 부- before ㄷ or ㅈ, as in 부족.
Related words