sed-, sedat-, -sid, -sess +

1. Someone who dissents from some established policy.
2. A person who is characterized by departing from accepted beliefs or standards.
3. Someone who disagrees; especially, with a majority.
4. An individual who disagrees or dissents in opinion or attitude.
5. Etymology: From Latin dissidentem and dissidere, "to be remote, disagree, be removed from"; "to sit apart"; derived from dis-, "apart" + sedere, "to sit".

1. A reference to or characterized by someone who departa from accepted beliefs or standards.
3. Relating to anyone who disagrees; especially, with a majority.

1. Intended to entrap, to beguile, or to allure; treacherous: "He had an insidious plan to steal the woman's purse."
2. Stealthily treacherous or deceitful: "We are fighting an insidious enemy."
3. Operating or proceeding in an inconspicuous, subtle, stealthy, or seemingly harmless way, but actually with a serious effect: "He had an insidious disease."
4. Treacherous; stealthy; denoting a disease that progresses gradually with inapparent symptoms.
5. Etymology: From Latin insidiosus, "deceitful", from insidae (plural) "plot, snare, ambush", from insidere, "to sit on, to occupy" from in-, "in" plus sedere "to sit".

1. In a harmfully insidious manner.
2. Having an imperceptible beginning, as of a disease with a late manifestation of definite symptoms.

1. Describing a development that is gradual, subtle, or imperceptible.
2. Being a disease that progresses with few or no symptoms to indicate its gravity.

1. To dominate or preoccupy the thoughts, feelings, or desires of (a person); beset, trouble, or haunt persistently or abnormally: "Suspicion obsessed him."
2. To think about something unceasingly or persistently.
3. To occupy someone's thoughts constantly, compulsively, and exclusively: "The desire for vengeance obsesses her."
4. Etymology: "To besiege", from Latin obsessus, past participle of obsidere, "besiege, occupy". Literally, "sit opposite to", from ob, "against" plus sedere "to sit". Of evil spirits, "to haunt", is from 1540. Obsession was originally (1513), "the act of besieging", then "hostile action of the devil or an evil spirit" (1605). The meaning "persistent influence or idea" is first recorded in 1680.

1. Influenced or controlled by a powerful force; such as, a strong emotion.
2. Having or showing excessive or compulsive concern with something or someone.
3. Having or displaying signs of an obsession.

1. An unhealthy and compulsive preoccupation with something or someone.
2. An irrational motive for performing trivial or repetitive actions even when the person doesn't want to.
3. An idea or feeling that completely occupies the mind.
4. The uncontrollable persistence of an idea or emotion in the mind, sometimes associated with a psychiatric disorder.

1. A reference to or characterized by obsession.
2. Relating to, characteristic of, or causing an obsession: "She had an obsessive-gambling habit."
3. Excessive in degree or nature: "The coach had an obsessive need for his team to win."

In medicine, referring to obsessions and compulsions, to obsessive-compulsive disorders, or to obsessive-compulsive personality disorders.

Produced by or involving sedimentation as affected by living organisms.

To assess (property or a property owner) at too high a tax figure; to overtax.

1. To have as property; to own.
2. To have as a quality, characteristic, or other attribute: "She possessed great tact."
3. To acquire mastery of or have knowledge of: "He possessed valuable data."
4. To gain or exert influence or control over; to dominate.
5. To control or maintain (one's nature) in a particular condition.
6. To cause to own, hold, or master something; such as, property or knowledge.
7. To cause to be influenced or controlled, as by an idea or emotion.
8. Etymology: Middle English possessen, from Old French possessier, from Latin possessus, past participle of possidere, "to possess"; which stands for pots, "mighty, powerful" plus sidere, literally "to sit as a master".

1. The act or fact of possessing.
2. The state of being possessed.

1. Wishing to control someone exclusively or to be the sole object of a person's love.
2. Tending not to share possessions with others.
3. Relating to ownership; such as, possessive pride.
4. In grammar, showing ownership in grammatical terms or indicating grammatical ownership; for example, in pronouns, "his" or "her".