| Adj. | 1. | unacknowledged - not recognized or admitted unknown - not known; "an unknown amount"; "an unknown island"; "an unknown writer"; "an unknown source" acknowledged - recognized or made known or admitted; "the acknowledged leader of the community"; "a woman of acknowledged accomplishments"; "his acknowledged error" |
| 2. | unacknowledged - not openly acknowledged; "an unacknowledged emergency"undeclared - not announced or openly acknowledged; "fighting an undeclared war" |