- an [a positive] assertion; a declaration; a positive statement
断言する assert, declare ((that)) (▼assertは挑むように確信をもって主張する,declareは強く言う)
- 彼は潔白だと断言した
- He asserted [declared] that he was innocent.
- ロケットの打ち上げは成功すると断言した
- He assured us that the rocket launch would be successful.
- 断言はできないが3日までに返事が来ると思う
- I cannot say for sure, but I think the answer will come by the third.