Words to Describe miscalculation

How miscalculation often is described ("________ miscalculation")

• classic
• evident
• rare
• stupid
• terrible
• bad
• big
• biggest
• vast
• simple
• worst
• similar
• colossal
• obvious
• grievous
• apparent
• egregious
• political
• crucial
• historic
• accidental
• only
• catastrophic
• extraordinary
• tactical
• gravest
• huge
• soviet
• massive
• sad
• minor
• fateful
• serious
• gross
• himalayan
• grave
• costly
• gigantic
• initial
• dreadful
• trifling
• disastrous
• mutual
• basic
• mere
• double
• unfortunate
• slightest
• dangerous
• slight
• strategic
• diplomatic
• monumental
• greatest
• military
• singular
• absurd
• fatal
• possible
• fundamental
• profound
• tragic
• communist
• complete
• sheer
• severe
• strange
• major
• enormous
• foolish