This is the 4752nd most frequent Spanish word.
consentimiento
Consent; agreement or permission.
Here, 'consentimiento' refers to an official agreement or permission granted by someone in authority (the parents).
El consentimiento de los padres es necesario para participar en la excursión escolar.
Parental consent is necessary to participate in the school trip.
In this case, 'consentimiento' is a formal agreement or acceptance, especially in a legal or medical context, with the added descriptor 'informado' meaning it is done with awareness and understanding.
El médico solicitó el consentimiento informado antes de realizar la operación.
The doctor requested informed consent before performing the surgery.
Here, 'consentimiento' is used to express an implicit or indirect agreement or permission, often accompanied by the adjective 'tácito' which means unspoken or implied; thus, this usage illustrates subtle or non-verbal acknowledgment.