double

/ˈdə-bəl/

Middle English, from Anglo-French duble, double, from Latin duplus (akin to Greek diploos), from duo two + -plus multiplied by; akin to Old English -feald -fold

adjective

  1. having a twofold relation or character : dual

  2. consisting of two usually combined members or parts

  3. being twice as great or as many

verb

  1. to make twice as great or as many: such as

  2. to increase by adding an equal amount

  3. to amount to twice the number of

adverb

  1. to twice the extent or amount

  2. two together

  3. downward and forward from the usual position