lagging Antonyms

keen refluent rotatory rushing scampering scuttling speeding speedy splitting rattling rapid late lightning lively painstaking persevering prompt punctual quick sprinting studious tantivy nippy unflagging hard-working eventual lightning fast like the wind scurrying highly developed cannonball activated tearing trotting turbo volant whirlwind whisking whizzing latest highly evolved active brisk busy cantering caring careful completive concerned conscientious