The word behavior is a noun. It is the way in which one behaves.
adverb
what part of speech is beneath
i want to know what part of speech is camping
"Controvert" is a verb; "extrovert" is usually a noun, although it could sensibly be a verb describing the behavior of some microorganisms.
The part of speech is a adjective
Behaviour/behavior is a noun.
"Demeanour" is a noun. It refers to outward behavior or conduct.
The word "guile" is a noun. It refers to the use of cunning or deceit in behavior.
Anthropology is a noun. It is the study of humankind, including human behavior, societies, cultures, and evolution.
The word "ungentlemanly" is an adjective. It describes a behavior or action that is not characteristic of a gentleman.
The word "frantic" is an adjective. It describes a state of wild or frenzied activity or behavior.
The part of speech for the word "excuse" can be both a noun and a verb. As a noun, it refers to a reason or explanation for forgiving or overlooking a fault or offense. As a verb, it means to provide a reason or justification for an action or behavior.
The word acerbity is a noun. The adjective form (which is used much more commonly) is acerbic.
"Nonverbal behavior" functions as a noun phrase. It refers to actions, gestures, or expressions that convey meaning without the use of words. In this context, "nonverbal" acts as an adjective describing the type of behavior.
The word "erratic" is an adjective. It is used to describe something that is unpredictable or irregular in behavior or movement.
The question "What part of speech is reputation?" means that someone is interested in knowing the part of speech (noun, verb, pronoun, adjective, adverb, preposition, conjunction, interjection) for the word reputation. Reputation is a noun.
The part of speech for this particular word is a noun.