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Từ điển WordNet v3.1 - WordNet Dictionary
perturbation


noun
1. an unhappy and worried mental state (Freq. 2)
- there was too much anger and disturbance
- she didn't realize the upset she caused me
Syn:
disturbance, upset
Derivationally related forms:
upset (for: upset), perturb, disturb (for: disturbance)
Hypernyms:
agitation
2. (physics) a secondary influence on a system that causes it to deviate slightly
Derivationally related forms:
perturb
Topics:
physics, natural philosophy
Hypernyms:
influence
Hyponyms:
variation
3. activity that is a malfunction, intrusion, or interruption
- the term 'distress' connotes some degree of perturbation and emotional upset
- he looked around for the source of the disturbance
- there was a disturbance of neural function
Syn:
disturbance
Hypernyms:
activity
Hyponyms:
fuss, trouble, bother, hassle, magnetic storm
4. a disposition that is confused or nervous and upset
Syn:
fluster
Derivationally related forms:
fluster (for: fluster), perturb
Hypernyms:
discomposure
5. the act of causing disorder
Syn:
disruption
Derivationally related forms:
perturb, disrupt (for: disruption)
Hypernyms:
disturbance
Hyponyms:
dislocation, breakdown, surprise, surprisal

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