Inf is the short form used for infant, which refers to a very young child or baby. Synonyms for inf include baby, newborn, babe, tot, and neonate. Each of these words denotes a young child who is still in the early stages of development. While "inf" is commonly used in the healthcare industry, the synonyms can also be useful when describing a child in everyday conversation. Using synonyms for inf can help to add variety to your language and make your language more interesting and engaging. It's essential to know appropriate synonyms for different words to improve your vocabulary and communication skills.