Antonyms for Speeding up

Antonyms starting with letter C

• cease

  assist the progress of, hurry, act
• check

  make happen faster, hurry, act
• condemn

  alleviate
• contract

  increase
• catch

  hurry
• conceal

  incite
• 

  calm

  increase
• compress

  increase
• comply

  increase
• cooperate

  increase
• cave in
• cheque