self-sustained

He is a self-sustained man, since he revels in ideas rather than in praises and honors.

When the spirit falls short of its due degree of self-sustained hardihood, fear finds its way to the heart.

You are required to assign some principle of motion such that it shall revolve through the parts of a mechanism self-sustained.

Each was arrogant and self-sustained, and each thoroughly and admiringly in love with the other.

At these cutting words, Romola shrank and drew herself up into her usual self-sustained attitude.