reptilian

"Reptilian" usually describes anything connected with reptiles such as snakes, lizards, turtles, and crocodiles. It brings to mind scales, a creeping way of moving, and the look or behavior of these animals. You might use it for a creature, a skin texture, a movement, or a face that seems snake-like or lizard-like.

The word is also used in a figurative way. If someone seems cold, distant, or guided only by instinct, they may be described as reptilian. In stories and fantasy settings, it can also describe beings with scales, sharp features, or an unsettling animal quality.

The word "reptilian" refers first to anything that belongs to reptiles or seems like a reptile. It is used for animals such as snakes, lizards, turtles, crocodiles, and alligators, and also for features linked with them, such as scales, narrow eyes, a slithering movement, or a hard, cool appearance. In science writing, it can describe bodies, fossils, skin, behavior, or other traits connected with reptiles.

The word also has a common figurative use. A person, expression, voice, or mood may be called reptilian if it seems cold, instinct-driven, unfriendly, or slightly frightening. In novels, films, and fantasy worlds, the word often helps create an image of something ancient, predatory, or only partly human. A character with scaled skin and a fixed stare may be described this way, and so may someone whose manner feels emotionally distant.

There is also a more unusual cultural use in conspiracy stories, where "reptilian" is applied to imaginary human-like beings said to hide among people. That meaning exists, but it is much less central than the everyday biological and figurative senses. Most of the time, the word simply points either to reptiles themselves or to a cold, animal-like quality in appearance or behavior.