A submissive is a person who makes a conscious choice to give up some or all control of her life to another person – a Dominant or a Top.
Dominance and submission is about a power exchange between two consenting adults. It is about the control within the dynamics of that relationship, whether it be a full time 24/7 relationship, or a casual meeting, or a part time arrangement.
Choosing to be submissive means to allow someone else to control your body and behavior within the preset limits you and that particular person, i.e., the Dominant, have agreed upon. Submission is not a sign of weakness, some of the most successful and strongest people are true submissives.
Submission is not about passiveness, it is not about being a doormat – most submissives are intelligent and well balanced people just fulfilling their basic desires to submit and to give up control.

The Categories of Submissive [P.1]

The Acolyte Submissive. The Acolyte is a disciple, follower, worshipper or priestess, and considers herself a holder of sacred knowledge, a gatekeeper with the keys to her Dominant’s inner sanctum, and a part of a relationship that may transcend even death in a quasi-religious D/s relationship dynamic. In essence, the Lesser God Dominant and his Acolytes create their own private religion. Best matches: The Lesser God Dominant / The White Knight Dominant / The Ineffable Dominant

The Brat Submissive.
The Brat is a submissive who is generally well-behaved, but has made misbehavior, teasing, and limited kinds of defiance or disobedience an integral part of the D/s dynamic she enjoys with her Dominant, preferably with his|her full awareness and at least his|her implied approval. Without the requisite awareness and approval of her Dominant, the more appropriate classification would be the Pseudo-Sub. Best matches: The Daddy/Mommy Dominant / The Tin Pot Dominant

The (hu)Cow/Pig Submissive.
The (hu)Cow or Pig submissive is one who enjoys being treated like a domesticated farm animal, and thrives on humiliation, degradation, and abuse from her Dominant. The relationship dynamic focuses on the real or imagined unattractiveness or worthlessness of the submissive. Cages, crates or pens are typically where the she is most comfortable.
Best matches: The Sadistic Dominant / The Femdomme Mistress.

The Domestic Submissive.
Sometimes referred to as a service submissive, she is expected to perform domestic duties such as cooking, cleaning, childcare, chauffeuring, and yard work. The Domestic sub is often expected to be sexually available to the Dominant, and sometimes to his other submissives, friends, or guests. Humiliation role play is quite often a significant part of their dynamic.
Best matches: The Sadistic Dominant / The Lesser God Dominant / The FemDomme Mistress.

The Little Submissive. A Little is a submissive who finds joy in embracing his or her inner child. This dynamic often involves behaving, speaking, or dressing in a child-like manner or engaging in typical child-appropriate activities, and may or may not involve sex or other adult-appropriate themes and activities. While most Littles and their Mommy or Daddy Doms find age play to be sexually stimulating, there are also many who do not associate being a Little with sex at all. Best match: The Daddy-Mommy Dominant / The White Knight Dominant / The Ineffable Dominant.