/ə'ʃɔ:(r); [US] ə'ʃʊər; ə`ʃur/
v
1 (a) [Dn.f] tell (sb) positively or confidently 明确地或有信心地告诉（某人）; 向（某人）保证
*I assure you they'll be perfectly safe with us. 我向你保证, 他们和我们在一起十分安全.
* They were assured that everything possible was being done. 已经向他们保证, 凡是可能做的都做到了.
(b) [Tn.pr, Dn.f] ~ sb/oneself (of sth) cause sb/oneself to be sure or feel certain about sth 使某人[自己]对某事物确信不疑或觉得肯定无误
*They tried to assure him of their willingness to work. 他们尽力使他相信他们乐意工作.
* She was able to assure herself that nothing had been taken from her purse. 她确信钱包 什么东西都没被拿走.
2 [Tn] make (sth) certain; ensure 使（某事物）确定; 确保
*Her success as an actress was now assured. 她当演员很成功, 已毋庸置疑了.
3 [Tn] insure (sth), esp against sb's death 给（某事物）保险（尤指寿险）
*What is the sum assured? 人寿保险额是多少?
4 (idm 习语) rest assured => rest1.

v [T]
[Date: 1300-1400; Language: Old French;Origin: assurer, from Medieval Latin assecurare, from Latin ad- 'to' + securus 'safe']
to tell someone that something will definitely happen or is definitely true so that they are less worried
= reassureassure sb that
　Her doctor has assured us that she'll be fine.
　The document is genuine, I can assure you .
assure sb of sth
　The dealer had assured me of its quality.
→rest assuredatrest² (5)
to make something certain to happen or to be achieved
= ensure
　Excellent reviews have assured the film's success.
assure sb (of) sth
　A win on Saturday will assure them of promotion to Division One.
assure yourself
formal to check that something is correct or true
assure yourself that
　Tim waited a moment to assure himself that he was not being followed.
assure yourself of
　I took steps to assure myself of her guilt.
the sum assured
formal the amount of insurance money to be paid out when someone dies