unduly

Adverb

• To an excessive, inappropriate, or unwarranted degree.
• to an undue degree
  • "she was unduly pessimistic about her future"

Adv

• Undeservedly; in a way that is not warranted.

Examples

• He was unduly confident after scoring a triple-word ’QUIZ’, but the game wasn’t over.
• The speaker unduly criticized his opponent and later apologized for this.