motto UK /ˈmɒ.təʊ/US /ˈmɑ.toʊ/noun 4verb 1forms 4 noun4 •A personal slogan.You have to be in it to win it — that's my motto. •A sentence, phrase, or word, forming part of an heraldic achievement.‘Gentlemen, I can tell you what the new queen will take as her motto. It is Bound to Obey and Serve.’ — 2020 •A sentence, phrase, or word, prefixed to an essay, discourse, chapter, canto, or the like, suggestive of its subject matter; a short, suggestive expression of a guiding principle; a maxim.It was the motto of a bishop eminent for his piety and good works, ... Serve God, and be cheerful. — 1715 •(no longer used) A paper packet containing a sweetmeat, cracker, etc., together with a scrap of paper bearing a motto. verb1 •To compose mottos.The singularity of his epigraphic strategy notwithstanding, Emerson does not draw attention to his own mottoing. One exchange suggests that his practice was a convention imposed from without. — 2003 formsmottoed · mottoing · mottos · mottoes