The term 'in a deadpan manner' can be summarized by two crossword solutions: DRYLY and DRILY. Both words mean to speak or act without emotion, humor, or enthusiasm. DRYLY is an adverb that means in a dull, unemotional way, while DRILY is an adjective that means lacking in emotion or humor. Both words are used to describe a person's behavior when they are not showing any emotion or enthusiasm.