- quickly 
Collins Concise English Dictionary © HarperCollins Publishers::
chop-chop 
(chop′chop′),USA pronunciation adv. 
            - with haste;
 quickly.
- repetitive compound based on Chinese Pidgin English chop quick, of uncertain origin, originally 1825–35
'chop chop' also found in these entries (note: many are not synonyms or translations):