Lie habitually
Break promises repeatedly
Interrupt people constantly
Ignore boundaries
Gossip about others
Take credit for other people’s work
Dismiss others’ feelings
Never apologize
Be rude to service staff
Show up late without notice
Dominate every conversation
Criticize everything
Mock people’s interests
Refuse to listen
Make everything about yourself
Spread negativity
Betray confidences
Use people for personal gain
Blame others for your mistakes
Act entitled
Be inconsiderate
Hold grudges forever
Humiliate people publicly
Avoid accountability
Manipulate others
Be unreliable
Drown conversations in complaints
Reject feedback
Make offensive jokes
Compare people unfavorably
Overstep personal space
Disrespect different opinions
Cancel plans at the last minute repeatedly
Never say thank you
Treat kindness as weakness
Exclude people intentionally
Use sarcasm to belittle others
Minimize others’ achievements
Be jealous and petty
Refuse to compromise
Spread rumors
Act superior
Ignore messages for no reason
Be selfish with time and attention
Make cruel comments
Never show appreciation