hem and haw
intransitive-verb
UK: /ˌhem ən ˈhɔː/
US: /ˌhem ən ˈhɔː/
To avoid giving a clear or direct answer; to be indecisive or hesitant in speaking.
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I asked him, but he just hemmed and hawed.
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The politician continued to hem and haw when questioned about the scandal.