There are many things like appearance (shoes), mannerisms,choices in everyday life, attitude towards those in subordinate positions, choice of words etc..
But to me most revealing thing about anybody is ‘What they gossip to me about others?’
- If they mock others incessantly in front of me, same they will do with my reference with others.
- If they are positive about others, they will do same about me.
Similar arguments for other scenarios.I am not referring to occasional chit-chat but general behaviour and attitude towards others behind their back.
We are not what we show but why we hide.