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arrest 
  vb 
1 apprehend, bust  (informal) capture, catch, collar  (informal) detain, feel one's collar  (slang) lay hold of, lift  (slang) nab  (informal) nail  (informal) nick  (slang, chiefly Brit.) pinch  (informal) run in  (slang) seize, take, take into custody, take prisoner 
2 block, check, delay, end, halt, hinder, hold, inhibit, interrupt, obstruct, restrain, retard, slow, stall, stay, stop, suppress 
3 absorb, catch, engage, engross, fascinate, grip, hold, intrigue, occupy 
  n 
4 apprehension, bust  (informal) capture, cop  (slang) detention, seizure 
5 blockage, check, delay, end, halt, hindrance, inhibition, interruption, obstruction, restraint, stalling, stay, stoppage, suppression 
 
Antonyms  
,   vb 
1 free, let go, release, set free 
2 accelerate, encourage, precipitate, promote, quicken, speed up 
  n 
4 freeing, release 
5 acceleration, encouragement, precipitation, promotion, quickening 

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"Collins Cobuild English Dictionary for Advanced Learners 4th edition published in 2003 © HarperCollins Publishers 1987, 1995, 2001, 2003 and Collins A-Z Thesaurus 1st edition first published in 1995 © HarperCollins Publishers 1995"