(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.
decline (verb), declines; declined; declining
declive (s), declives (pl) (nouns)
1. Decline, a slope or a slanting surface.
2. Sloping downward.
1. Sloping down rather steeply.
2. Moderately steep.
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".
Capable of being boiled or digested.
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.
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.
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.