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Use "blotting" in a sentence
"They have not taken precautionary measures such as blotting out faces and license plates."
"Meanwhile the person of whom he speaks IS HERE THE ACTOR-AUTHOR, whom the players, his friends, commended "wherein he faulted," namely, in not "blotting" where, in a thousand cases, Ben wishes that he HAD blotted."
"As it advances, it makes once-complicated processes such as blotting out the background of images, very easy to do with software."