Second nature means a habit, skill, response, or way of thinking that has become so familiar it feels automatic. In poetry, the idiom is useful for craft, prayer, labour, music, grief, manners, language, or survival instincts. It suggests that repeated practice can become embodied, almost as natural as breathing. A poet may use it to praise mastery or to show how social conditioning becomes invisible. The phrase helps students understand how form, rhythm, and memory can move from effort into instinct.

Second nature means a learned behaviour that has become effortless, as if it were innate. In poetry, it can describe craft, prayer, music, labour, manners, grief rituals, or survival skills. The phrase raises questions about nature and habit: repeated action can become part of identity. Students should compare it with force of habit. It pairs well with hands, instruments, tools, gestures, and knowledge carried in the body.