Idiot
Definition 1 of 4
Pro Tip 1/3
Casual Insult
Used casually among friends, it might be less offensive but still be careful with usage. You forgot the tickets? You're such an idiot!
Pro Tip 2/3
Negative Connotation
While sometimes playful, it's essentially negative and can hurt feelings. Calling someone an idiot can be very hurtful.
Pro Tip 3/3
Not Professional
Avoid using 'idiot' in professional or formal settings as it's inappropriate. In a business meeting, never call a colleague an idiot.