Use 'entreat' when making a serious and heartfelt request, showing deep sincerity. I entreat you to reconsider your decision.
Pro Tip 2/3
Anxious Plea
Apply 'entreat' when expressing an urgent plea or a sense of anxiety over a request. She entreated the judge for mercy.
Pro Tip 3/3
Formal Context
'Entreat' is often used in formal contexts or in written English rather than casual conversation. We earnestly entreat your support for our charity event.