english
1
general::
double up
to share something, especially a room, with someone else
• Terry will have to double up with Bill in the front bedroom., double back
to turn and go back in the direction you have come from
• We realized we had taken the wrong road and had to double back., double (up) as sth
to be also used as something else
• The kitchen table doubles as my desk when I'm writing.
• Our spare bedroom doubles up as a study for Dan when he's working at home., double (sb) up/over
If you double up/over, or if something doubles you up/over, you suddenly bend forwards and down, usually because of pain or laughter
• Most of the crowd doubled up with laughter at every joke.
• She was doubled up/over with the pain in her stomach.
Cambridge-Phrasal Verbs
2
general::
In addition to the idioms beginning with DOUBLE, Also see LEAD A DOUBLE LIFE; ON THE DOUBLE; SEE DOUBLE.
American Heritage Idioms
3
general::
adj.
two-fold:
We had a double portion of food.
verb
increase:
Everyone must double their effort.
Simple Definitions
4
general::
verb ADV. more than Our profits have more than doubled this year. | almost, nearly, practically, virtually The price of houses has nearly doubled in the last ten years. | effectively | approximately, roughly PREP. in The village has approximately doubled in size since 1960. | to The party almost doubled its share of the vote to 21.5%.
Oxford Collocations Dictionary