IPA: /ɪnˈkwɪtjuːd/
KK: /ɪnˈkwɪtud/
A feeling of restlessness or anxiety; a state of being uneasy or troubled.
She felt a sense of inquietude as she waited for the results of her exam.
Inquietude → It is formed from "in-" (meaning not) and "quietus" (from Latin, meaning quiet or at rest) and the suffix "-tude" (indicating a state or condition). The word "inquietude" refers to a state of being not at rest or a condition of restlessness.
Think of 'not' ('in-') being 'quiet' ('quietus') — that's why inquietude means a state of restlessness.