Rashi on Genesis 16:12/רש"י על בראשית ט״ז:י״ב

1פרא אדם A WILD MAN — One who loves the open spaces to hunt wild animals, as it is written of him (Genesis 21:20) “And he dwelt in the wilderness and became an archer.”

2ידו בכל HIS HAND SHALL BE AGAINST EVERY ONE — a highwayman.

3ויד כל בו AND EVERYONE’S HAND AGAINST HIM — everyone will hate him and attack him.

4ועל פני כל אחיו ישכון AND HE SHALL DWELL IN THE PRESENCE OF ALL HIS BRETHREN — his descendants will be numerous, (so that his territory must extend over that which his brethren have; cf. Genesis 25:18).