Retard

مترادف و متضاد retard

1. verb hinder, obstruct
   Synonyms: arrest, back off, baffle, balk, bog, bog down, brake, bring to screeching halt, check, choke, choke off, clog, close off, crimp, dawdle, decelerate, decrease, defer, delay, detain, down, encumber, falter, fetter, flag, hamper, handicap, hang up, hesitate, hold back, hold up, impede, lessen, let up, loaf, loiter, mire, poke, postpone, reduce, retardate, set back, shut down, shut off, slacken, slow down, slow up, stall, take down
   Antonyms: advance, help, push