n.

1. 保證[U][+（that）]
2. 表示保證（或鼓勵等）的話[C][+（that）]
   The contractor gave assurances that the work would be completed on time.

   承包人表示過保證按時完工。

3. 把握，信心[U][+（that）]
   They answered with assurance that it was against the rules.

   他們很有把握地回答說那是違反規定的。

4. 對自己才能的信心，自信[U]
   The teacher lacked assurance in front of his class.

   那位教師在學生面前缺乏自信。

5. 厚顏無恥[U][the S][+to-v]
   He had the assurance to ask me for money.

   他竟厚著臉皮向我要錢。

6. 【英】（人壽）保險[U]

n.

1. a positive declaration intended to give confidence.
2. confidence in one's own abilities.
   ▸certainty.
3. chiefly Brit. life insurance.