A state of anxiety, uneasiness, or worry; the feeling of being mentally or emotionally disturbed.
From disquiet + -ude (a noun suffix meaning state or condition), combining the verb disquiet with a suffix to create an abstract noun describing the emotional state itself.
This word became fashionable in 18th-century English literature, appearing frequently in philosophical and romantic works to describe the new psychological focus on inner emotional states—writers loved it!
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