en
hallmark
/ˈhɑːl.mɑːrk/
Definition
1
A distinctive feature or quality characteristic of a person, thing, or group.
2
An official mark stamped on articles made of gold, silver, or platinum to certify their purity.
3
A mark or symbol signifying excellence, genuineness, or approval.
Examples
Procrastination is the hallmark of every genius inventor – after all, who needs deadlines when you've got divine inspiration?
The hallmark of a true coffee addict is measuring life in lattes rather than hours.
Wearing socks with sandals became the hallmark of his bold fashion rebellion in the boardroom.
Forgetting where you parked is the hallmark of a mind too busy plotting world domination.