over-confidence

A student's over-confidence leads to a careless mistake on a simple test.

Definition

1. Noun:
   • Excessive belief in one's own abilities or judgment: "over-confidence" refers to an inflated sense of certainty about one's skills, knowledge, or decisions, often leading to underestimation of risks or challenges.
   • Unwarranted assurance: A state of being overly self-assured without sufficient evidence or reason.

Usage Examples

• (His excessive belief in his own judgment made him dismiss important advice.)
• (Too much faith in his abilities resulted in an avoidable error.)
• (Unwarranted assurance about the economy's safety played a role in the collapse.)

Advanced Usage

• "Over-confidence bias": a cognitive bias where a person's subjective confidence in their judgments is reliably greater than the objective accuracy of those judgments.

  • Investors often suffer from over-confidence bias, leading them to take excessive risks. (The tendency to overestimate one's knowledge or predictions.)

• "to breed over-confidence": to create or encourage excessive self-assurance.

  • Repeated success can breed over-confidence in a team. (Winning too often can make a team believe they are invincible.)

Variants and Related Words

• Overconfident (adj): having or showing excessive confidence.
  • The overconfident student did not study for the exam and failed. (The student was too sure of passing without preparation.)
• Overconfidently (adv): in a manner that shows excessive confidence.
  • She overconfidently claimed she could finish the project in one day. (She spoke with too much assurance.)

Synonyms

• Arrogance: an exaggerated sense of one's own importance or abilities.
• Hubris: excessive pride or self-confidence, often leading to downfall (common in literature and philosophy).
• Presumption: overstepping boundaries due to excessive confidence.

Antonyms

• Humility: a modest view of one's own importance.
• Caution: carefulness to avoid risks or mistakes.

Related Idioms

• "Bite off more than one can chew": to take on a task that is too difficult because of over-confidence.
  • He bit off more than he could chew by promising to finish the report in one hour. (His over-confidence led him to underestimate the work.)
• "Count one's chickens before they hatch": to assume success prematurely due to over-confidence.
  • She counted her chickens before they hatched by spending the prize money before winning. (She was overconfident about the outcome.)