Submissive
Adjective
Being submissive is wanting to or being willing to submit to orders or wishes of another. Showing in inclination in this way. An overriding desire to be pleasing. Willingly submitting without resistance to authority. Being subservient or servile.
Noun
In [BDSM]], a submissive refers to the person who takes on the submissive role for the duration of a scene or is a submissive partner within a power exchange relationship.
This term can be associated with being on the receiving end of bondage, discipline or sadism but need not necessarily be any of these.
The term submissive as a noun is mostly synonymous with sub but some people use it more widely to denote anyone disposed to be submissive and would therefore say that a submissive might be a bottom, a sub or a slave. Not all slaves feel themselves to be submissive, however and not all bottoms are submissive.