inquietude
A condition of being restless, uneasy or nervous.
countable, uncountable
Yet, I confess, my frankness has involved me in many after thoughts and inquietudes; inquietudes, which all my reasoning is, at times, insufficient to allay.
Where it comes from
Learned borrowing from Latin inquiētūdō.
Adapted from the Wiktionary entry inquietude (CC BY-SA 4.0).