1) genial, chill, easy-going, easy to get along with, calm, and every other agreeable synonym.
you
don't need to worry about this person freaking out on you, or being bipolar for that matter.
they won't stab you in the back and usually approach things with a certain
soft, relaxed appeal.
2) slightly and pleasantly intoxicated
3) Pleasantly
high from a drug, especially from smoking marijuana.
4) Moist, rich, soft, and loamy. Used of soil.