Implicitly means without being stated, or completely and without question. Implicitly agreed, trust him implicitly, implicitly acknowledged.
The two senses are far apart: an implicit agreement was never spoken, while trusting somebody implicitly means holding nothing back. The second is the commoner in speech and the first in writing.
1adverbimplicitlyWithout being stated, or completely and without question.
“By staying silent, he implicitly accepted the blame.”
implicitly is a manner.
Latin
implicitus
Middle French
implicite
English
implicit
English, today
implicitly
Built from
From implicit + -ly. implicit comes from Middle French implicite, from Latin implicitus, past participle of implico (“to infold, involve, entangle”); see implicate.
Etymology from Wiktionary, CC BY-SA