How does Affinity work in Monster Hunter Rise?

sportskeeda.com:

Affinity is a damage-modifying stat that can positively or negatively affect weapons in Monster Hunter Rise.

There are many stats that players need to worry about in the game, but Affinity is one of the more important. It is also one of the more confusing, as it doesn't come with much detail at first.

Think of it as a critical hit chance, but with a bit more to it. Affinity will determine whether or not the character lands a powerful strike or hits their opposition with a weak glance.

Every weapon in Monster Hunter Rise comes with its own Affinity value. In the weapon upgrade and forging screens, the Affinity stat will be shown on the right side in the Equipment Info window.

Positive Affinity will be colored green and negative Affinity will be colored red. This is how you will know whether or not that weapon has a greater chance for a strong blow or a weaker hit.

The Affinity of a weapon can be adjusted. There are certain armor skills and forge decorations that can boost the Affinity of a weapon, making stronger ones even more dangerous and weaker ones worth using.

Here are all of the armor skills that increase Affinity and how they do so:

The game will show when a positive or negative Affinity-affected attack lands. A red line will appear behind the damage number when an attack is made stronger due to its Affinity stat.

The opposite happens when a purple line appears behind the damage number in Monster Hunter Rise. That purple color indicates a negative Affinity roll and the damage that is dealt will be much lower.