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deceit the act or practice of misleading, tricking, or cheating. [3 definitions]
deceitful full of deceit; duplicitous. [2 definitions]
deceive to lead (a person) to believe something that is untrue; mislead; trick; defraud. [2 definitions]
decelerate to lower the speed of; decrease in velocity; slow down.
December the twelfth month of the Gregorian calendar year, having thirty-one days.
decemvir one of a council of ten members that drew up the first code of Roman laws in 450 B.C. [2 definitions]
decency the quality, state, or condition of being decent. [3 definitions]
decennial happening every ten years. [3 definitions]
decent conforming to social standards, as for morality, modesty, good taste, or the like; not obscene or offensive. [5 definitions]
decentralize to assign the powers and functions of (a central organization or service) to various local branches or entities. [2 definitions]
deception the act of causing someone to believe an untruth, or the state of being so deceived. [2 definitions]
deceptive able to or tending to deceive; misleading.
decerebrate to separate the brain from the spinal cord of (a person or animal), as by surgery. [3 definitions]
deci- one tenth.
deciare a unit of area equal to ten square meters or 11.96 square yards.
decibel a unit indicating the level of loudness of sound, relative to a standard level, or indicating relative differences in power levels of electrical signals, equal to ten times the common logarithm of the ratio of the two levels. (abbr.: dB)
decide to arrive at a conclusion about or a settlement of; determine. [7 definitions]
decided unquestionable. [2 definitions]
decidua a mucous membrane that lines the uterus and is cast off at childbirth or during menstruation.
deciduous of trees and shrubs, having leaves that drop off seasonally each year. (Cf. evergreen.) [3 definitions]
decigram a unit of weight equal to one tenth of a gram or 1.543 grains.