The term 'face, slangily' can be broken down into four crossword solutions: KISSER (6 letters), MUG (3 letters), PUSS (4 letters), and PHIZ (4 letters). KISSER is a slang term for the mouth, often used to refer to someone's lips. MUG is another slang term for face, usually used to describe someone's facial expression. PUSS is a slang term for face, typically used to describe someone's appearance. Finally, PHIZ is an old-fashioned slang term for face, derived from the word 'PHYSIOGNOMY'. All of these terms are used to describe someone's face in a casual or informal manner.