The word “obnoxious” is an adjective that describes something or someone as highly unpleasant, offensive, or annoying. It refers to behaviors, attitudes, or characteristics that are regarded as objectionable or bothersome.


US English

UK English

Part of Speech



offensive, annoying, irritating, unpleasant, insufferable, rude, obnoxious


pleasant, delightful, charming, amiable, likable, friendly

Word Forms

Part of Speech Words
Noun obnoxiousnesses, obnoxiousness
Verb None
Adjective obnoxious
Adverb obnoxiously

Example Sentences

  • The obnoxious neighbor would blast loud music late into the night, disturbing the entire neighborhood.

  • During the meeting, he continuously interrupted others, making obnoxious comments and dismissing their ideas.

  • The obnoxious customer berated the waitstaff and made derogatory remarks, creating an uncomfortable atmosphere in the restaurant.

  • She had an obnoxious habit of constantly boasting about her accomplishments, making others feel inadequate in comparison.


The word “obnoxious” originated from the Latin word “obnoxiosus,” which means “subject to harm or injury.” The term was derived from the combination of the prefix “ob-” (meaning “toward” or “against”) and the root “noxius” (meaning “harmful” or “noxious”). Originally, “obnoxious” referred to something or someone that was liable to cause harm or injury.

Over time, the usage of “obnoxious” evolved to describe people or behaviors that are extremely unpleasant, offensive, or annoying. It is commonly used to characterize individuals who are rude, disrespectful, or disruptive in their interactions with others. The term carries a negative connotation and implies that the person or behavior is intentionally bothersome or inconsiderate.

The prefix “ob-” in “obnoxious” conveys a sense of being against or toward, suggesting a clash or opposition with social norms or expectations. The root “noxius” signifies harm or injury, underscoring the negative impact associated with the word.

The word “obnoxious” is frequently used to express strong disapproval or irritation towards someone’s behavior or attitude. It highlights behavior that is seen as inconsiderate, offensive, or disruptive to others. The term emphasizes the negative effect such behavior has on the well-being and comfort of those around them.

Variations of “obnoxious” include “obnoxiously” as an adverb form and “obnoxiousness” as a noun form. These variations allow for further emphasis on the manner in which someone’s behavior is carried out or the degree of annoyance it causes.

Understanding the history and usage of “obnoxious” reminds us of the importance of respectful and considerate behavior towards others. It serves as a way to describe behaviors that are offensive, irritating, or disruptive and helps to identify and address instances of social misconduct.