- not prominent or easily noticeable
- not perceptible
We all missed the imperceptible shake of his head as he tried to warn us without being seen.
- not obtrusive
- not found; undiscovered
- , faint or indistinct
an obscure passage or inscription; The speaker made obscure references to little-known literary works.
- Absent in mind; often preoccupied; forgetful or careless due to distraction; easily distracted
It took the absent-minded man twenty minutes to find his glasses on top of his head.
- Unable to be seen; out of sight; not visible
I went invisible so that my ex-girlfriend wouldn't send me instant messages.
- (transitive, astronomy) To cover or hide from view
The Earth occults the Moon during a lunar eclipse.
- Not distinguishable; not capable of being perceived, known, or discriminated as separate and distinct
- Not seen or discovered; invisible
What has been seen cannot be unseen.