From Longman Dictionary of Contemporary Englishadhere to something phrasal verb formalto continue to behave according to a particular rule, agreement, or belief We adhere to the principles of equal rights and freedom of expression for all. I have adhered strictly to the rules. → adhere→ See Verb tableFrom Longman Business Dictionaryadhere to something phrasal verb to behave according to a rule, agreement etcNow companies must adhere to stricter guidelines on the disposal of toxic waste. —adherence noun [uncountable]Aid to these countries is linked to their strict adherence to disarmament agreements. → adhere→ See Verb table