Babylike is an adjective that describes someone or something that resembles or exhibits infant-like characteristics, behaviors or qualities. The antonyms for babylike include mature, grown-up, adult, serious, responsible, and dignified, among others. These terms connote attributes that are opposite to those associated with babies such as urgency, independence, rationality, and a sense of self-awareness. Other antonyms for babylike include sensible, reasonable, composed, level-headed, and practical. Babylike is often used to describe the behavior or qualities of children, whereas the antonyms imply mature and responsible characteristics that are generally associated with adulthood.