There are a total of 932 Personality traits that have been compiled and organized in this comprehensive list. The selection includes single-word and common hyphenated descriptors of habitual behavior, emotion, and cognition, sourced from trait models, clinical glossaries, and common usage.

Personality traits are stable patterns of thinking, feeling, and behaving that distinguish one person from another. They range from broad dimensions like extraversion or conscientiousness to narrow qualities such as meticulousness or impulsivity. Traits help predict consistent responses across situations and inform career choices, relationships, and personal development.

Interesting and little-known facts about Personality traits:
– Allport and Odbert’s 1936 catalog listed about 4,500 English trait terms, a foundation for later trait taxonomies.
– Twin and family studies estimate trait heritability at roughly 40–60%, with most remaining variance explained by nonshared environments.
– Meta-analyses show rank-order stability increases with age, reaching moderate-to-high levels (about 0.6–0.7) in adulthood.
– The HEXACO model adds Honesty–Humility as a sixth domain, capturing traits like sincerity and fairness not fully covered by the Big Five.
– Shared family environment usually explains little variance in adult traits; siblings often differ mainly because of unique experiences.

Use the alphabetical index to find traits quickly, with each letter grouping linked to detailed entries. Each entry shows columns for a concise definition, common synonyms, mapping to major models (Big Five/HEXACO), example behaviors, developmental notes, and source references.