Wordnet 3.0
ADJECTIVE (1)
1.
impossible or difficult to perceive by the mind or senses;
- Example: "an imperceptible drop in temperature"- Example: "an imperceptible nod"- Example: "color is unperceivable to the touch"[syn: imperceptible, unperceivable]
The Collaborative International Dictionary of English v.0.48:
Unperceivable \Unperceivable\
See perceivable.
WordNet (r) 3.0 (2006):
unperceivable
adj 1: impossible or difficult to perceive by the mind or
senses; "an imperceptible drop in temperature"; "an
imperceptible nod"; "color is unperceivable to the touch"
[syn: imperceptible, unperceivable] [ant:
perceptible]