shudder (shudders plural & 3rd person present) (shuddering present participle) (shuddered past tense & past participle )
1 verb If you shudder, you shake with fear, horror, or disgust, or because you are cold.
Lloyd had urged her to eat caviar. She had shuddered at the thought... V prep/adv
Shudder is also a noun., n-count usu sing
She recoiled with a shudder.
2 verb If something such as a machine or vehicle shudders, it shakes suddenly and violently.
The train began to pull out of the station<endash>then suddenly shuddered to a halt... V prep/adv
The whole ship shuddered and trembled at the sudden strain. V
3 n-count If something sends a shudder or shudders through a group of people, it makes them worried or afraid.
The next crisis sent a shudder of fear through the UN community...
4 If you say that you shudder to think what would happen in a particular situation, you mean that you expect it to be so bad that you do not really want to think about it.
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shudder to think phrase V inflects, usu PHR wh (feelings)
I shudder to think what would have happened if he hadn't acted as quickly as he did.