Definition of "unacknowledged"

[T]he use of both acknowledged and unacknowledged (silent) translations of non-English sources makes it difficult for users to determine if a certain term genuinely appeared in an English-language text.

2018, James Lambert, “Setting the Record Straight: An In-depth Examination of Hobson-Jobson”, in International Journal of Lexicography, volume 31, number 4, page 496