however; but; yet

I am tired; nevertheless, I must finish my homework.

In adolescence, I hated life and was continually on the verge of suicide, from which, however, I was restrained by the desire to know more mathematics.

All individuals in the world act with clear goals and distinct intentions. But once these actions are brought together by the great torrents of life, clarity recedes and chaos ensues.

We ordered the products on time. However, they won’t be dispatched until next month.

Once is like never, implied the young lady. Yet the gynecologist implied: "twins."