Formal:
* Suine: This is a more formal and scientific term.
* Porcine: Another formal term, often used in medical or agricultural contexts.
Informal:
* Hog: This is a general term for a pig, especially an adult male.
* Boar: This refers specifically to a male pig.
* Sow: This refers to a female pig.
* Shoat: This is a young pig, usually less than six months old.
* Farrow: This refers to a litter of piglets.
* Grunter: This is a playful term for a pig, emphasizing its characteristic sound.
* Snouter: This is another playful term highlighting their nose.
Figurative:
* Swine: This word can be used to refer to pigs in a negative or derogatory way, implying uncleanliness or greed.
* Slob: This word can be used to describe a messy or unkempt person, comparing them to a pig.
Other:
* Porker: This is a term used for a pig raised for meat.
* Oinker: This is a child-like term for a pig.
The best word to use depends on the specific context and desired meaning.