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general::
Phrase(s): I’m not surprised. [and] I don’t wonder.
It is not surprising.; It should not surprise anyone. • Mary: All this talk about war has my cousin very worried. Sue: No doubt. At his age, I don’t wonder. • John: All of the better-looking ones sold out right away. Jane: I’m not surprised.
McGrawhill's American Idioms And Phrasal Verbs