smear.

To spread (a substance, especially one that colours or is dirty) across a surface by rubbing.

The artist smeared paint over the canvas in broad strokes.

To cover (a surface with a layer of some substance) by rubbing.

She smeared her lips with lipstick.

To make something dirty.

(of a substance, etc.) To make a surface dirty by covering it.

To damage someone's reputation by slandering, misrepresenting, or otherwise making false accusations about them, their statements, or their actions.

The opposition party attempted to smear the candidate by spreading incorrect and unverifiable rumors about their personal behavior.

To cause (something) to be messy or not clear by rubbing and spreading it.

To become messy or not clear by being spread.

The paint is still wet — don't touch it or it will smear.

To write or draw (something) by spreading a substance on a surface.

To cause (something) to be a particular colour by covering with a substance.

To rub (a body part, etc.) across a surface.

To attempt to remove (a substance) from a surface by rubbing.

To climb without using footholds, using the friction from the shoe to stay on the wall.

A mark made by smearing.

This detergent cleans windows without leaving smears.

A mark made by smearing. A presentation of a sauce, purée or other food item, which is placed in a dollop and spread across the plate.

A false or unsupported, malicious statement intended to injure a person's reputation.

smear campaign

A preparation to be examined under a microscope, made by spreading a thin layer of a substance (such as blood, bacterial culture) on a slide.

A Pap smear (screening test for cervical cancer).

I'm going to the doctor's this afternoon for a smear.

Any of various forms of distortion that make a signal harder to see or hear.

A maneuver in which a shoe is placed onto a holdless rock, and the friction from the shoe keeps it in contact with the rock.

A rough glissando in jazz music.