"The Dictionary of Lost Words is a work of fiction. All incidents and dialogue, and all characters with the exception of some well-known historical figures, are products of the author's imagination and are not to be construed as real. Before the lost word, there was another. It arrived at the Scriptorium in a second-hand envelope, the old address crossed out and Dr Murray, Sunnyside, Oxford, written in its place. It was Da's job to open the post and...

"Gretel, a lexicographer by trade, grew up on a houseboat with her mother, wandering the canals of Oxford and speaking a private language of their own invention. Her mother disappeared when Gretel was a teen, abandoning her to foster care, and Gretel has tried to move on, spending her days updating dictionary entries. When her mother phones, Gretel will have to recover buried memories of her final, fateful winter on the canals. A runaway boy had found...

Boswell's biography of the writer Samuel Johnson.

Realizing they have to hear how real people talk, a group of lexicographers end up assisting a beautiful singer get away from the mob.