noun a word (other than a pronoun) used to identify any of a class of people, places, or things
adjective a word naming an attribute of a noun, such as sweet, red, or technical
adverb a word or phrase that modifies or qualifies an adjective, verb, or other adverb
pronoun a word that can function by itself as a noun phrase and that refers either to the participants in the discourse (e.g., I, you) or to someone or something mentioned elsewhere in the discourse (e.g., she, it, this)
preposition a word governing, and usually preceding, a noun or pronoun and expressing a relation to another word or element in the clause
Used to convey a feeling of extreme caution or alertness in a dangerous environment
Used to describe a sense of unease or apprehension in a high-pressure situation
Used to describe a feeling of nervousness or fear before a competition or important event
A writer may use the phrase 'with your heart in your boots' to describe a character who is feeling extremely nervous or fearful in a story they are writing.
A psychologist may use the phrase 'with your heart in your boots' to describe a patient who is experiencing extreme anxiety or panic attacks.
An athlete may use the phrase 'with your heart in your boots' to describe feeling extremely nervous or lacking confidence before a big game or competition.
An actor may use the phrase 'with your heart in your boots' to describe the feeling of stage fright or nervousness before a performance.