This Ability effect may be in need of research. Reason:How does it work with Stellar Tera? You can discuss this on the talk page.
Adaptability increases STAB of a Pokémon with this Ability from 1.5 to 2.
When a Pokémon with Adaptability is Terastallized, Adaptability only affects moves of the Tera Type. If the Pokémon's Tera Type is one of its original types, its STAB is 2.25; otherwise, it's 2.
In Pokémon UNITE, Adaptability is Ability of an Eevee that will evolve into an Sylveon. It increases the user's Special Attack by 5% for 1.5s, when it deals or receives damage, stacking up to 4 times. This becomes Pixilate upon evolving.