deep regret; bitter disappointment; chagrin; vexation
free from worldly or worthless thoughts
Shintō Munen-ryū (school of swordsmanship founded by Fukui Hyōemon Kahei in the 18th century)
being really disappointed; feeling utterly mortified; being deeply vexed
being free from all distracting thoughts; keeping one's mind clear of all worldly thoughts; being free from all ideas and thoughts