12 letter words
100

A connection or association between people or things, indicating a bond or link that exists. Usually when two people date, they are considered in this. 

Relationship 

200

Also known as a detective, this is someone who conducts an inquiry or examination, often for the purpose of uncovering information or solving a problem, demonstrating a commitment to truth and justice. 

Investigator 

300

A substance used to calm or sedate a person or animal, often used in medical procedures or to treat anxiety disorders, promoting relaxation and reducing stress

Tranquilizer 

400

This is a spectacular display of wealth and luxury, often used to celebrate a special occasion or event. Can also be known as a gala, spectacle or pageant. 

Extravaganza 

500

This is the act of carefully considering and discussing a decision or action, often resulting in a thoughtful and well-informed outcome

Deliberation