Spitting is the act of forcibly ejecting saliva or other substances from the mouth. The act is often done to get rid of unwanted or foul-tasting substances in the mouth, or to get rid of a large buildup of mucus. Spitting of small saliva droplets can also happen unintentionally during talking, especially when articulating ejective and implosive consonants.

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Spitting in public is considered rude and a social taboo in many parts of the world including the West, while in some other parts of the world it is considered more socially acceptable.

Spitting upon another person, especially onto the face, is a global sign of anger, hatred, disrespect or contempt. It can represent a "symbolical regurgitation" or an act of intentional contamination.^[1]

There are some places where spitting is a competitive sport, with or without a projectile in the mouth. For example, there is a Guinness World Record for cherry pit spitting and cricket spitting, and there are world championships in Kudu dung spitting.

In rural parts of North India, it was customary in olden days for mothers to lightly spit at their children (usually to the side of the children rather than directly at them) to imply a sense of disparagement and imperfection that protects them from evil eye (or nazar).^[36] Excessive admiration, even from well-meaning people, is believed to attract the evil eye, so this is believed to protect children from nazar that could be caused by their own mothers' "excessive" love of them.^[36] However, because of hygiene, transmission of disease and social taboos, this practice has waned and instead a black mark of kohl or kajal is put on the forehead or cheek of the child to ward off the evil eye. Adults use an amulet containing alum or chillies and worn on the body for this purpose. Sometimes, this is also done with brides and others by their loved ones to protect them from nazar.

Shopkeepers in the region used to sometimes make a spitting gesture on the cash proceeds from the first sale of the day (called bohni), which is a custom believed to ward-off nazar from the business.^[37]

Such a habit also existed in some Eastern European countries like Romania, and Moldova, although it is no longer widely practiced. People would gently spit in the face of younger people (often younger relatives such as grandchildren or nephews) they admire in order to avoid deochi,^[38] an involuntary curse on the individual being admired or "strangely looked upon",^[38] which is claimed to be the cause of bad fortune and sometimes malaise or various illnesses.^[39] In Greece, it is customary to "spit" three times after making a compliment to someone, the spitting is done to protect from the evil eye.^[40] This applies to all people, not just between mothers and children.

A similar-sounding expression for verbal spitting occurs in modern Hebrew as "Tfu, tfu" (here, only twice), which some say that Hebrew-speakers borrowed from Russian.^[41]

When a suspect in a criminal case is arrested, they will sometimes try to spit at their captors, which often causes a fear of infection by Hepatitis C and other diseases. Spit hoods are meant to prevent this.

Gleeking is the projection of saliva from the submandibular gland. It may happen deliberately or accidentally, particularly when yawning, or after eating something sweet, sour or spicy. If done deliberately, it can be regarded as a form of spitting.

• Camel
• Llama
• Spitting cobra
• Spitting spider

• Drooling
• Spit-take