Consent definition: to permit, approve, or agree; comply or yield (often followed by to or an infinitive).. See examples of CONSENT used in a sentence. Learn the meaning of consent as a noun, with pictures, pronunciation and usage notes. Find out how to use consent in different contexts, such as permission, agreement, or official document. There are 11 meanings listed in OED's entry for the noun consent , four of which are labelled obsolete. See ‘ Meaning & use’ for definitions, usage, and quotation evidence. CONSENT meaning : 1. permission or agreement: 2. agreement to sexual activity, given by someone who is free to…. Learn more.