have swallowed a dictionary

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have swallowed a dictionary

To use an extensive vocabulary, especially by incorporating uncommon words into one's speech. That guy sounds like he's swallowed a dictionary—none of the kids can follow what he's saying.
See also: dictionary, have, swallow
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

have swallowed a dictionary

use long and obscure words when speaking. informal
See also: dictionary, have, swallow
Farlex Partner Idioms Dictionary © Farlex 2017
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