A person who blathers; someone who talks excessively and foolishly.
Agent noun formed from 'blather' by adding the suffix '-er,' which converts verbs into nouns describing someone who performs that action (like 'teacher' from 'teach').
The '-er' suffix is one of English's oldest word-making tools—we've been adding it for over a thousand years to create names for people who do things! A blatherer is simply someone with a chronic blathering problem.
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