General blending in:
* Camouflage: This is the most common word for the ability to hide by blending in with the surroundings.
* Inconspicuous: This means not attracting attention.
* Unassuming: This means not appearing to be important or impressive.
* Discreet: This means being careful not to attract attention or cause offense.
* Subtle: This means being delicate and understated.
Social blending in:
* Assimilate: This means to become absorbed into a culture or society.
* Integrate: This means to become part of a group or society.
* Conform: This means to behave in a way that is accepted by a group or society.
* Fit in: This is a more informal way of saying that someone is able to blend in with a group.
The best word to use will depend on the specific situation. For example, if you are talking about an animal blending in with its surroundings, you would use the word "camouflage." If you are talking about someone who is able to blend in with a group of people, you might use the word "assimilate."