A person with inconstant behavior; one able to quickly adjust to new circumstances.
A hypothetical scalar particle with a non-linear self-interaction, giving it an effective mass that depends on its environment: the presence of other fields.
A small to mid-size reptile, of the family Chamaeleonidae, and one of the best known lizard families able to change color and project its long tongue.
Describing something that changes color.
A person who actively seeks or takes advantage of opportunities.
A person who subsists on still-edible food that has been or was going to be discarded.
One who will generally eat whatever is available, having a diet that excludes few foods.