knows UK /nəʊz/US /noʊz/verb 1phrases 3 verb1 •(nonstandard) All persons, singular and plural, present form of know.I knows just what they knows. Phrases with knows as far as one knowsTo the best of one's knowledge, as far as someone knows or possible information to be gathered about the topic, subject, aspect, or situation. fuck knowsI don't know; nobody knows; it is unclear. next thing one knowssuddenly, out of the blue.