second nature


noun

an acquired habit or tendency in one's character that is so deeply ingrained as to appear automatic: Neatness is second nature to him.

Origin of second nature

First recorded in 1655–65

Example sentences from the Web for second nature

  • She struck more chords, her fingers finding the keys with the second-nature sureness, learned in her months of dreary practice.

    Rough-Hewn |Dorothy Canfield
  • Telling lies is a fault in a boy, an art in a lover, an accomplishment in a bachelor, and second-nature in a married man.

    A Guide to Men |Helen Rowland

British Dictionary definitions for second nature

second nature

noun

a habit, characteristic, etc, not innate but so long practised or acquired as to seem so

Idioms and Phrases with second nature

second nature

A habit or mode of behavior so long practiced that it seems innate, as in Driving in heavy traffic is second nature to Chris. This expression is a shortened form of an ancient proverb, Custom (or usage) is a second nature, first recorded in 1390. It alludes to the fact that very frequently repeating something makes it seem completely natural or inborn.