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.