Слово "automatic". Англо-русский словарь Мюллера

He discovered that while he sat helplessly musing he had also been writing, as though by automatic action.

He glanced at the hand that held the brand, noticing the cunning delicacy of the fingers that gripped it, how they adjusted themselves to all the inequalities of the surface, curling over and under and about the rough wood, and one little finger, too close to the burning portion of the brand, sensitively and automatically writhing back from the hurtful heat to a cooler gripping-place; and in the same instant he seemed to see a vision of those same sensitive and delicate fingers being crushed and torn by the white teeth of the she-wolf.