observably
ob·ser·vably
adverb
1.
in an imperceptible manner or to an imperceptible degree
- “the power of the Secretary of State in London increased gradually but imperceptibly”
Origin
From observable + -ly.
Related words
Pertaining to
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.