ĭn-observātus, a, um, adj.,
unobserved , unperceived , Ov. M. 2, 544; 4, 341: et incertum tempus, Sen. Q. N. 3, 26 med. : sidera, Ov. F. 3, 111: columba, Mart. 8, 32, 3.
in-observātus adj., unobserved, unperceived: ille in herbis, O.: sidera, O. ...
An Elementary Latin Dictionary