means Inclined to yield to the will, authority, or control of another, often willingly and by choice.

from From Latin submittere, "to lower, place under" — sub- ("under") plus mittere ("to send, put"). So at its root, to be submissive is to send yourself beneath another, to set yourself down low. The same mittere fathered a sprawling family of English words — submit, permit, transmit, mission — all built on that one verb of sending. The English adjective arrived by way of "submission," first describing humility before God or king before it ever wandered into the bedroom.