Definitions

1. noun

The state or quality of being alien; strangeness or foreignness.

“The concept of alienness is a recurring theme in science fiction literature.”

2. noun

A feeling of not belonging or being an outsider.

“She felt a sense of alienness in the crowded city, where everyone seemed to know each other.”

3. noun

Something that is unfamiliar or strange.

“The strange noises in the abandoned house created an atmosphere of alienness.”