Wiktionary
vb. 1 (context transitive rare English) To undo the watching of something; to unsee. 2 (context transitive Wiktionary and WMF jargon English) To remove (a webpage) from one's watchlist.
Usage examples of "unwatch".
James looked around to see that he was unwatched and moved to the rear of the alley.
Hammers nothing but sullen defiance, but now, alone and unwatched in the cell, his guts are twisted into a cold knot of terror and despair, and he can feel tears dampening the denim.
So you may sometimes see a little, grave boy walking through a field, unwatched as he believes, suddenly fling his feet and his head every which way.
To move, speak and breathe,--go out and come in unwatched, and free from danger!
Wherever they went, children and goodwives melted away into the woods, leaving toys discarded and pots unwatched, whilst the farmers of the Starn were always in the farthest, muddiest back hollows of their fields, too hard at work to even look up when a plate-armored shadow fell across them.
But if Uwen were Idrys, and if he were Cefwyn, then he would know that Meiden would not do anything unwatched, and he would never have to hear of it or trouble his soul unless there was reason.