The most appropriate synonym for "reluctant" is "unwilling" because both words convey a similar meaning of being hesitant or unwilling to do something. "Pleased," "afraid," and "steady" have different meanings and do not accurately capture the sense of reluctance.

The term "covenant" refers to a formal and binding agreement or contract between two or more parties. Among the provided options, "contract" is the word that best expresses the meaning of "covenant." A contract typically involves mutual promises and obligations agreed upon by the parties involved.

The term "innocuous" refers to something that is harmless, inoffensive, or unlikely to cause harm. Among the provided options, "harmless" best expresses the meaning of "innocuous," as it denotes the absence of harm or danger.

The term "deposition" typically refers to the act of removing someone from a position of authority, especially in a legal or political context. "Impeachment" aligns closely with this meaning, as it involves charging a public official with misconduct and potentially removing them from office. Therefore, among the given options, "impeachment" best expresses the meaning of "deposition."

The word "petulant" is used to describe someone who is easily irritated, annoyed, or displays sudden, impatient irritation. Among the provided options, "peevish" is the term that best expresses the meaning of "petulant," as it denotes a disposition prone to being irritable or easily annoyed.

The word "obnoxious" describes something or someone that is extremely unpleasant, offensive, or annoying. Among the given options, "disgusting" best expresses the meaning of "obnoxious," as it denotes something highly offensive or repulsive.