- 1[countable] a statement that something will certainly be true or will certainly happen, particularly when there has been doubt about it synonym guarantee, promise They called for assurances that the government is committed to its education policy. Unemployment seems to be rising, despite repeated assurances to the contrary.
- 2(also self-assurance) [uncountable] belief in your own abilities or strengths synonym confidence There was an air of easy assurance and calm about him. It was good to see some of her old assurance coming back. see quality assurance
Check pronunciation: assurance