indiscernible
in·dis·cer·nible
adjective
1.
2.
- “the transition was almost indiscernible”
- “an almost insensible change”
Origin
From in- + discern + -ible.
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.