A constellation of personality characteristics commitment, control, and challenge that has been linked to resistance to stress.
In a wide sense, the ability to withstand adverse conditions, but in gardening the use of this term has narrowed to mean frost hardiness, at least in those parts of the world where frost is a major factor in determining what plants can be grown. The opposite of hardy is tender, and tenderness likewise is commonly taken to mean frost tenderness.
Those physical and/or psychological characteristics that contribute to resiliency or the ability to withstand stress.
A personality trait of people who possess resistance to stress and do not seem to suffer negative effects from it.
A construct described as a stress-resistant personality that exhibits existential courage through a synergy of the three cognitive elements of control, challenge, and commitment.