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(v.) = wimp out (on), wimp, chicken out (on/of)

Ex. The main reason he wimped out was that he had a cheap bike that didn't gear properly, and made it extremely hard to bike efficiently.

Ex. He regards David Jull's unwillingness to take up such a proposal as an early indication that John Howard and his colleagues are wimping.

Ex. So basically they are chickening out of the debate.

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(v.) = wimp out (on), wimp, chicken out (on/of)

Ex: The main reason he wimped out was that he had a cheap bike that didn't gear properly, and made it extremely hard to bike efficiently.

Ex: He regards David Jull's unwillingness to take up such a proposal as an early indication that John Howard and his colleagues are wimping.

Ex: So basically they are chickening out of the debate.