to a noun to suggest that the thing mentioned is not true, real, or worthy of the name: nonevent. Non! (EP), Big Country. This disambiguation page lists articles associated with the title Non. If an internal link incorrectly led you here, you may wish to change the link to point directly to the intended article. Now citizens can submit tips and information online to the police regarding crime and suspicious activity occurring in Pacifica. If you have information you would like to submit to the Pacifica Police Department via the web, visit our tip submission form. Stay connected with us on social media! See examples of non- used in a sentence. NON- definition: not or the opposite of. Learn more. Find similar words to non- using the buttons below. Non- definition: Not. The meaning of NON- is not : other than : reverse of : absence of. How to use non- in a sentence. Used in the sense of no or none, to show lack of or failure to perform; or in the sense of not, to negate the meaning of the word to which it is prefixed. Non- is used in front of nouns to form nouns which refer to situations where a particular action has not or will not take place. He was disqualified from the council for non-attendance. Both countries agreed on non-interference in each other's internal affairs. NON- definition: 1. used to add the meaning not or the opposite of to adjectives and nouns: 2. used to add the…. Learn more.