de-

prefix Etymology: Middle English, from Anglo-French de-, des-, partly from Latin de- from, down, away (from de, preposition) and partly from Latin dis-; Latin de akin to Old Irish di from, Old English tō to — more at to, dis- 1. a. do the opposite of <

deactivate

> b. reverse of <

de-emphasis

> 2. a. remove (a specified thing) from <

delouse

> b. remove from (a specified thing) <

dethrone

> 3. reduce <

devalue

> 4. something derived from (a specified thing) <

decompound

> ; derived from something (of a specified nature) <

denominative

> 5. get off of (a specified thing) <

detrain

> 6. having a molecule characterized by the removal of one or more atoms (of a specified element) <

deoxy-

>