Final answer:
The word that fits the student's query with synonyms 'tie up,' 'chain up,' and 'leash,' and antonyms 'untie,' and 'let loose,' is 'kidnapping.'
Step-by-step explanation:
The student's question seems to be centered around finding a noun and a verb that have specific synonyms and antonyms. Given the list provided, the word that matches the description of having the synonyms 'tie up,' 'chain up,' and 'leash,' and the antonyms 'untie' and 'let loose' could be 'kidnapping.'
This matches as a verb; to kidnap someone is to unlawfully seize and detain them, often tying them up or chaining them. In opposition, to untie or let someone loose would mean to release them from restraints, which would be the antonym to kidnapping.
The given question seems to be about the synonyms, antonyms, and definitions of a particular word. Based on the provided keywords, it appears that the word being discussed is 'tie up' or 'leash'.
In this context, 'tie up' or 'leash' is a verb that means to secure or restrict something or someone. Synonyms for this word include 'chain up' and 'leash'. Antonyms, on the other hand, are words that have the opposite meaning, such as 'untie' and 'let loose'.
An example sentence using 'tie up' or 'leash' could be: 'The dog was tied up in the backyard to keep it from running away'.