impalpable
Concise Oxford English Dictionary © 2008 Oxford University Press:
impalpable/ɪmˈpalpəbl/
▶adjective
- 1 unable to be felt by touch.
- 2 not easily comprehended.
– derivatives
impalpability noun,
impalpably adverb.
impalpability noun,
impalpably adverb.
'impalpable' also found in these Oxford entries:

