Giving assent refers to agreeing or approving of something. There are several synonyms for this phrase, which can help you express your opinion in different ways. One of the synonyms is consent, which relates to giving approval or permission for something to happen. Another synonym for 'give assent' is acquiesce, which means to accept or allow something to happen without resistance or objection. Approve, endorse, permit, authorize, and sanction are other synonyms to increase the variety of your language. All these synonyms convey the same meaning of giving permission or agreement to something, but they differ from one another based on the intensity of consent or agreement.