Anxiety

Choosing to leave her behind in 22nd century England, the First Doctor told Susan Foreman to go forward without regrets, tears or anxieties. (TV: The Dalek Invasion of Earth)

Albert Arnold told the Second Doctor that he looked anxious as the latter waited for the Great Intelligence to absorb him. (TV: The Web of Fear)

A Mark VI combat mechanical detected anxiety in Graham O'Brien's voice. (PROSE: The Secret in Vault 13)