Antonyms for Make certain

Antonyms starting with letter D

• disprove

  make sure, resolve, confirm
• destroy

  make sure, resolve
• deny

  confirm, pledge, guarantee
• discredit

  confirm
• discourage

  pledge
• disregard

  attend
• disobey

  attend
• disorganize

  resolve
• disarrange

  resolve
• disorder

  resolve
• derange
• disagree
• 

  disturb
• depart