English Reference

Word

obnoxious

Phoneticsob·nox·ious

US/ɑbˈnɑkʃəs/

UK/ɒbnˈɒkʃəs/

Definitions

01annoying or rude

B2

adj. very unpleasant or rude, especially in a way that makes other people feel uncomfortable or angry.

adj. extremely offensive, objectionable, or brazenly rude. Often used to describe social behavior that is loud, arrogant, or inconsiderate.

“The man at the next table was being very obnoxious and shouting at the waiter.”

“The guest's obnoxious behavior at the gala, including his loud interruptions and arrogant tone, eventually forced the host to ask him to leave.”

02vulnerable to harm

C2

adj. exposed to something bad or likely to be hurt by something.

adj. exposed or vulnerable to something, especially harm, injury, or unfavorable influence. This sense is restricted to historical or highly formal literary contexts.

“In the old story, the traveler was obnoxious to the dangers of the dark forest.”

“The legal scholar argued that the new colony remained obnoxious to the laws of the mother country until a formal treaty was signed.”

Archaic · Literary

Antonyms

Real-World Examples

“With his sporting dreams suddenly vaporised, he became an obnoxious playboy.”
The Guardian · 3 Sept 2026
“As Dante Gabriel Rossetti, she is the ultimate hipster bro, a printed Carhartt logo stuck to her top hat adding an excellent touch in the depiction of his obnoxious faux-trendiness.”
The Guardian · 23 Aug 2026

Etymology

PIE word *h₁epi Learned borrowing from Latin obnoxiōsus (“subject to someone, under someone’s authority”) + English -ous (suffix denoting the presence of a quality in any degree, typically an abundance). Obnoxiōsus is derived from obnoxius (“guilty, punishable; subject to someone, under someone’s authority”) + -ōsus (suffix meaning ‘full of; overly; prone to’, forming adjectives from nouns).

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry

Level
C1 · Advanced
Frequency
Frequent
Updated

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English Reference