fail - verb

• fail to do something; leave something undone
• be unsuccessful
• disappoint, prove undependable to; abandon, forsake
• stop operating or functioning
• be unable
• judge unacceptable
• fail to get a passing grade
• fall short in what is expected
• become bankrupt or insolvent; fail financially and close
• prove insufficient
• get worse

fail - thesaurus

betray   bomb   break   die   flunk   go   miscarry   neglect