noun
- the quality or state of being free from doubt; certainty or confidence
Usage: formal; uncommon in modern usage
Examples
- She spoke with doubtlessness about the project's success.
- His doubtlessness in the face of criticism impressed the team.
- The doubtlessness of her conviction was evident in every word.
- He approached the challenge with doubtlessness and determination.
- Their doubtlessness about the plan's viability proved justified.