underpromise編輯正在努力提供更完整的內容，建議 20 分鐘後再回來看看underpromiseunderpromise — 動詞動詞1. to promise less than what you think you can deliver1.動詞釋義保守承諾to promise less than what you think you can deliver例句I always underpromise and overdeliver to keep my clients happy.