smudge

It is not a clean line. It is the kind of mark you get when something is blurred or smeared. Think of a fingerprint on glass, charcoal rubbed across paper, or mascara running down your face after a good cry. You get one when something is dragged across a surface by accident. Sometimes these marks are just messy accidents. Other times, they are part of an artistic effect. A detective might look for blurred fingerprints, while an artist might create soft marks to make a drawing look gentler.

A smudge is a blurred or smeared mark, often caused by something being rubbed or pressed onto a surface. It suggests that the shape or line is no longer clear. Think about writing in pencil on soft paper - if you brush your hand across it, you will leave a smudge. Or imagine trying to clean a dusty window; instead of removing the dirt completely, you might just spread it into a series of smudges.

The word can be used as both a noun and a verb. As a noun, "a smudge of dirt" describes the mark itself. As a verb, "Don't smudge the ink!" means to blur or smear something intentionally or accidentally.

Smudges are not always negative. Artists sometimes use smudging techniques - like blending charcoal with their fingers - to create soft shadows and textures in drawings. A little smudging can add depth and character. However, a smudge on an important document could make it hard to read.

So whether it's a messy fingerprint, a deliberate artistic effect, or an unwanted blemish, a smudge is always about something being blurred, smeared, or imperfectly defined.