Synonyms: inconspicuous, invisible
Definition: not prominent or readily noticeable
Usage: he pushed the string through an inconspicuous hole; the invisible man
Similar words: unnoticeable, obscure
Definition: not drawing attention
Usage: an unnoticeable cigarette burn on the carpet; an obscure flaw
Synonyms: unseeable, invisible
Definition: impossible or nearly impossible to see; imperceptible by the eye
Usage: the invisible man; invisible rays; an invisible hinge; invisible mending
Similar words: camouflaged
Definition: made invisible by means of protective coloring
Similar words: hidden, concealed, out of sight
Definition: not accessible to view
Usage: concealed (or hidden) damage; in stormy weather the stars are out of sight
Similar words: infrared
Definition: having or employing wavelengths longer than light but shorter than radio waves; lying outside the visible spectrum at its red end
Usage: infrared radiation; infrared photography
Similar words: lightless
Definition: giving no light
Usage: lightless stars `visible' only to radio antennae
Similar words: nonvisual
Definition: not resulting in vision
Usage: nonvisual stimuli
Similar words: occult
Definition: hidden and difficult to see
Usage: an occult fracture; occult blood in the stool
Similar words: ultraviolet
Definition: having or employing wavelengths shorter than light but longer than X-rays; lying outside the visible spectrum at its violet end
Usage: ultraviolet radiation; an ultraviolet lamp
Similar words: undetectable
Definition: not easily seen
Similar words: unseeyn
Definition: not seen or perceived
Usage: unseen natural resources