de-

(Latin: from, away from, off; down; wholly, entirely, utterly, complete; reverse the action of, undo; the negation or reversal of the notion expressed in the primary or root word)

declassified (adjective)
declassify (verb), declassifies; declassified; declassifying
To lift the restriction on something and to make it available again.
declension (di KLEN shuhn) (s) (noun), declensions (pl)
1. A method of categorizing nouns, pronouns, and adjectives regarding their number, their gender, and their grammatical cases: In English class at school, James learned about the declensions or formations of certain nominative forms of words, as with "man", "man's", "men", or "men's"; which he could then use correctly in his essay.

A grammatical case involves such declensions which are used to show their relations to other words: "I" is the nominative case; "me" is the objective case; and "my" is the possessive case.

2. A refusal or a rejection: The declension the teacher made prohibited the children from leaving the group at any time during their field trip to the state fair.
3. A decrease or a waning of something: A declension of Jack’s fitness was noticeable after being in the hospital for two weeks following the operation on his knee.
4. A slope or a downgrade: After climbing up the mountain and enjoying the view, the group's declension back to their cabin took several hours, but they arrived there before it was dark.
declination
decline (verb), declines; declined; declining
declive (s), declives (pl) (nouns)
1. Decline, a slope or a slanting surface.
2. Sloping downward.
declivitous
1. Sloping down rather steeply.
2. Moderately steep.
declivity
1. A downward slope or bend.
2. A surface; especially, a piece of land, that slopes downward.
3. A downward inclination; especially, of a piece of land.
decoct (verb), decocts; decocted; decocting
1. To extract the flavor of by boiling.
2. To make concentrated; to boil down.
3. To extract the essence or active ingredient from a substance by boiling it.
4. Etymology: from Middle English decocten, "to boil", from Latin decoquere, decoct-, "to boil down" or "to boil away"; from de-, "down, away" + coquere, "to boil, to cook".
decoctible
Capable of being boiled or digested.
decoction
1. The extraction of an essence or active ingredient from a substance by boiling.
2. A concentrated substance that results from decoction, or boiling.
3. Water in which a crude vegetable drug has been boiled and which therefore contains the constituents or principles of the substance soluble in boiling water.
4. The act or process of boiling resulting in a medicine or other substance prepared by boiling.
decoctum
A liquid preparation made by boiling a medicinal plant with water usually in the proportion of five parts of the drug to 100 parts of water.
decocture
decode (verb), decodes; decoding; decoded
1. To decipher a coded message from code into plain text or ordinary language.
2. To convert from a scrambled electronic signal into an interpretable one or into normal analogue components.
3. To extract the underlying meaning from: decode a complex literary text.
4. To understand the meaning of a word or a phrase in a foreign language in the correct way.
decollate (verb), decollates; decollated; decollating
To sever from the neck, to behead, or to decapitate.