1. If spitting, one is disgusted with something.
2. If spitting, one is trying to purge oneself of something.
3. If spitting on someone, expression of contempt.
[1]A rift with a friend is likely to follow a dream of seeing someone spit; try to be more diplomatic in putting forward your opinions.
[2]You ought to spit out something, or has something overwhelmed you?
[3]Releasing hostile, negative emotions; getting things up and out.
[4]Contempt, Job 17:6
[5]See “spew”
[6]