Deprived of quiet; impatient; restless; uneasy.

Want of quiet; want of tranquility in body or mind; uneasiness; restlessness; disturbance; anxiety.

To render unquiet; to deprive of peace, rest, or tranquility; to make uneasy or restless; to disturb.

Disquiet (Беспокойство) is a 1965 sci-fi novel by Boris and Arkady Strugatsky set in the Noon Universe. It is the initial variant of the novel Snail on the Slope (Улитка на склоне) which has a different set of characters and is not set in the Noon Universe. After completing the first draft, the authors felt a need to take a novel in a different direction, which resulted in the creation of Snail on the Slope.

the trait of seeming ill at ease