15th century, in the meaning defined at sense 1a
Middle English yameren, alteration of yomeren to murmur, be sad, from Old English gēomrian; akin to Old High German jāmaron to be sad
(Entry 1 of 2)
Synonyms for yammer
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yammer
verbSynonyms & Antonyms of yammer (Entry 2 of 2)
Synonyms for yammer
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Antonyms for yammer