... The prince, bewildered by his mother’s serious manner, wished to reply, but he could only stammer out some unintelligible words... 
Alexandre Dumas, Pere 「Ten Years Later」
... started to stammer an apology; but Cresswell interrupted him: ...
W. E. B. Du Bois 「The Quest of the Silver Fleece」
...What webut hesitatingly stammer, the Word boldly asserts...
Henry Warren 「Recreations in Astronomy」
...Poor old chap, he couldn't explain how angry he was, but he managedto stammer out, “White fellow—fool; pony drink 'em...
Ernest Giles 「Australia Twice Traversed, The Romance of Exploration」
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