Overconfident means surer of success than the facts allow. Overconfident of victory, dangerously overconfident, overconfident about the timing.
It is one of the best-documented faults in judgement, since people are reliably too sure of their own estimates and the effect is strongest in those who know least. It is a criticism made afterwards far more often than before.
1adjectiveoverconfidentSurer of success than the facts allow.
“The overconfident student didn't revise and failed the exam.”
overconfident is a quality.
Proto-Indo-European
*bʰeydʰ-
Latin
confidens — confident, i.e. self-confident, in a good or bad sense, bold, daring, audacious, impudent
Middle French
confident
English
confident
English, today
overconfident
Built from
From over- + confident. confident comes from Middle French confident, from Latin confidens (“confident, i.e. self-confident, in a good or bad sense, bold, daring, audacious, impudent”), present participle of confidere (“to trust fully, confide”). See confide.
Etymology from Wiktionary, CC BY-SA