consent

Etymology

Recorded in Middle English since circa 1225, borrowed from Old French consentir, from Latin cōnsentīre, present active infinitive of cōnsentiō (“to agree; to assent, consent”), itself from com- (“with”) + sentiō (“to feel”)

verb

1. (intransitive) To express willingness, to give permission.
   After reflecting a little bit, I've decided to consent.
2. (transitive, medicine) To cause to sign a consent form.
   When the patient was consented to enter the study and registered, a telephone call was made to research assistant 2002, T Usmani, KD O'BrienHV WorthingtonS Derwentet al., “A randomized clinical trial to compare the effectiveness of canine lacebacks with reference to canine tip”, in Journal of Orthodontics, volume 29, number 4, →DOI, →PMID
3. (transitive, obsolete) To grant; to allow; to assent to.
4. To agree in opinion or sentiment; to be of the same mind; to accord; to concur.

noun

1. Voluntary agreement or permission.
2. (obsolete) Unity or agreement of opinion, sentiment, or inclination.
3. (obsolete) Advice; counsel.