1.
declaration, assertion, affirmation
A confident, definitive statement made without hesitation or qualification. Implies the speaker is certain of what they are saying and is willing to commit fully to the claim.
彼は無実だと断言した。
He declared his innocence.
成功するとは断言できない。
I cannot say for certain that it will succeed.
専門家は「この地域に大きな地震が来る」とは断言を避け、「可能性がある」という表現にとどめた。
The expert avoided making a definitive statement that 'a large earthquake will hit this area,' limiting the expression to 'there is a possibility.'
USAGE:
Used as both a noun and a suru verb. The negative form 断言できない (cannot say for certain) is particularly common, as speakers often hedge their statements. When used in the positive, it conveys strong conviction and personal responsibility for the claim.
COMMON COLLOCATIONS:
- 断言する: to declare, to assert
- 断言できない: cannot say for certain
- 断言を避ける: to avoid making a definitive statement
SIMILAR WORDS:
- 明言: clear statement (similar force but less emotional weight)
- 宣言: declaration (more official, public-facing)