to pepper one's speech with extraneous words or details
(as with someone who drops gratuitous f-bombs, like the characters in the movie The Big Lebowski)
► uses
Uses:
When they were out of the village they began talking again as loud as before, interlarding their talk with the same aimless expletives.
Leo Tolstoy. War and Peace: 15 (Book Fifteen)
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She stayed close enough to the truth so that one could never be sure. She knew two other methods also—either to interlard her lies with truth or to tell a truth as though it were a lie.
John Steinbeck. East of Eden, p.73 (1952)
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He was restive all through it; he kept tally of the details of the prayer, unconsciously—for he was not listening, but he knew the ground of old, and the clergyman’s regular route over it—and when a little trifle of new matter was interlarded, his ear detected it and his whole nature resented it; he considered additions unfair, and scoundrelly.