unsharp
To sharpen by creating a blurred negative as a mask, and then combining that mask with…To sharpen (an image) by creating a blurred ("unsharp") negative as a mask, and then combining that mask with the original.
Meaning
1 sensesTo sharpen (an image) by creating a blurred ("unsharp") negative as a mask, and then combining that mask with the original.
Origin
From Middle English *unscharp, from Old English unsċearp, from Proto-West Germanic *unskarFrom Middle English *unscharp, from Old English unsċearp, from Proto-West Germanic *unskarp, from Proto-Germanic *unskarpaz, equivalent to un- + sharp. Cognate with Saterland Frisian uunskäärp (“unsharp”), West Frisian ûnskerp (“unsharp”), Dutch onscherp (“unsharp”), German Low German unscharp (“unsharp”), German unscharf (“unsharp”), Danish uskarp (“unsharp”), Swedish oskarp (“unsharp”), Norwegian uskarp (“unsharp”).
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Forms
unsharps, unsharping, unsharped, unsharpedLessons for this word
3 lessons- A1Present simple — Because it is a verb
- A1Past simple, regular verbs — Because of its past form
- A2Present perfect: introduction — Because of its past participle