An infant (from the Latin word infans, meaning "unable to speak" or "speechless") is the very young offspring of a human or other animal. When applied to humans, the term is usually considered synonymous with baby or bairn (in Scottish English), but the latter is commonly applied to the young of any animal. When a human child learns to walk, the term toddler may be used instead. An infant is usually called a baby in simple English, as many people use the term 'baby' instead of infant.