Possible misspelling? More dictionaries have definitions for
thymus
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to him You must understand monsieur
The chief of the moderate party, a member of the municipal council, sent for the journalist and said to him, “You must understand, monsieur, that we are serious, more than serious—tiresome; we resent being amused, and are furious at having been made to laugh. — from Albert Savarus by Honoré de Balzac
things happening you must understand much
The cheering that had followed the last tussle of our men with the black mutineers had now ceased, and all these things happening, you must understand, much more rapidly than I can talk or attempt to chronicle them, the skipper, with Mr Fosset and Garry O’Neil, came hurriedly up on the poop. — from The Ghost Ship: A Mystery of the Sea by John C. (John Conroy) Hutcheson
twisted his yellow mustache up more
Thereat the German Resident became even cheerful, though he twisted his yellow mustache up more fiercely and continued to curse the Solomons with oaths culled from four languages. — from A Son Of The Sun by Jack London
This tab, called Hiding in Plain Sight,
shows you passages from notable books where your word is accidentally (or perhaps deliberately?)
spelled out by the first letters of consecutive words.
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it's fun to explore! What's the longest hidden word you can find? Where is your name hiding?