Chameleon
WordNet
noun
(1) Lizard of Africa and Madagascar able to change skin color and having a projectile tongue
(2) A faint constellation in the polar region of the southern hemisphere near Apus and Mensa
(3) A changeable or inconstant person
WiktionaryText
Etymology
From < from + . First attested in 1340.
Noun
- 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.
- A person with inconstant behavior; one able to quickly adjust to new circumstances.