off-putting

This term describes a visceral reaction of distaste or hesitation. It is frequently used to describe sensory experiences, such as a pungent odor or a harsh visual, but it equally applies to social behaviors and personality traits that make a person seem unapproachable or unpleasant.

While similar to "repulsive," it is generally milder and more focused on the psychological barrier it creates. It suggests a deterrent effect that discourages further engagement or interest, rather than a state of total horror or disgust.