Definition
Reputation is the cumulative impression of a person held by a community — the shorthand others use to predict how that person will behave before they meet again. It is not what someone privately is, but what others believe them to be, and it operates as a form of social currency that opens or closes doors long before any direct interaction.
Because reputation precedes a person into every room, it does much of the work of influence on their behalf. A strong reputation makes people extend trust, forgive small errors, and assume good intent. A damaged one makes every action read as suspicious, regardless of the underlying truth.
Why it matters
How it works
Reputation forms when scattered observations of a person harden into a stable label. Each consistent action adds weight to that label until it becomes the default lens through which others view the person. The asymmetry is severe: dozens of reliable acts build a name gradually, while one striking lapse can overwrite it overnight, because negative information is more memorable and more widely retold.
This makes reputation both an asset to invest in and a vulnerability to defend. Skilled operators choose a single quality to be known for, reinforce it relentlessly, and stay alert to attacks on it — knowing that an undefended reputation invites others to define them on unfavorable terms.