Objection–obsessed Vocabulary (O Words) – Meanings & Synonyms

Objection

LawB2

Meaning: a reason for disagreeing

Part of speech: noun

Example: She raised an objection to the proposal.

Category: Law › Legal Terms

Synonyms:

protest
disagreement

Objectionable

SocietyC1

Meaning: something that is offensive or unacceptable

Part of speech: adjective

Example: The comments were deemed objectionable.

Category: Society › Behavior

Synonyms:

offensive
unacceptable

Antonyms:

acceptable
agreeable

Objective

LanguageC1

Meaning: not influenced by personal feelings

Part of speech: adjective

Example: The report should be objective and factual.

Category: Language › Communication

Synonyms:

impartial
neutral

Antonyms:

subjective
biased

Objector

PoliticsC1

Meaning: a person who expresses disagreement

Part of speech: noun

Example: The objector voiced concerns about the plan.

Category: Politics › Activism

Synonyms:

protester
dissenter

Obligated

LawB2

Meaning: required to do something

Part of speech: adjective

Example: You are obligated to follow the rules.

Category: Law › Legal Terms

Synonyms:

required
bound

Antonyms:

free
unbound

Obligation

LawB2

Meaning: a duty or commitment

Part of speech: noun

Example: He has an obligation to help his family.

Category: Law › Legal Terms

Synonyms:

duty
responsibility

Antonyms:

freedom
option

Obligato

ArtsC2

Meaning: a musical term for a part that is essential

Part of speech: noun

Example: The obligato enhances the melody.

Category: Arts › Music

Synonyms: essential part

Obligatory

LawB2

Meaning: required by law or rule

Part of speech: adjective

Example: Wearing a seatbelt is obligatory in the car.

Category: Law › Legal Terms

Synonyms:

mandatory
compulsory

Antonyms:

optional
voluntary

Oblige

LawB2

Meaning: to make someone do something

Part of speech: verb

Example: I will oblige you with your request.

Category: Law › Legal Terms

Synonyms:

compel
force

Antonyms:

free
release

Obliged

SocietyB2

Meaning: feeling grateful or indebted

Part of speech: adjective

Example: I am obliged to you for your help.

Category: Society › Gratitude

Synonyms:

grateful
thankful

Obliging

SocietyB2

Meaning: willing to help

Part of speech: adjective

Example: She is an obliging person who always assists others.

Category: Society › Behavior

Synonyms:

helpful
accommodating

Antonyms:

unhelpful
selfish

Oblique

LanguageC1

Meaning: not straightforward or direct

Part of speech: adjective

Example: He gave an oblique answer to the question.

Category: Language › Communication

Synonyms:

indirect
slanting

Antonyms:

direct
straightforward

Obliterate

GeneralC2

Meaning: to destroy completely

Part of speech: verb

Example: The explosion obliterated the building.

Category: General

Synonyms:

destroy
annihilate

Antonyms:

create
build

Oblivion

GeneralC2

Meaning: the state of being forgotten

Part of speech: noun

Example: The book fell into oblivion after its release.

Category: General

Synonyms:

forgetfulness
unawareness

Antonyms:

awareness
memory

Oblivious

GeneralB2

Meaning: not aware of or concerned about something

Part of speech: adjective

Example: She was oblivious to the noise around her.

Category: General

Synonyms:

unaware
ignorant

Antonyms:

aware
conscious

Oblong

GeometryB1

Meaning: longer than it is wide

Part of speech: adjective

Example: The table has an oblong shape.

Category: Geometry

Synonyms:

rectangular
elongated

Antonyms:

square
circular

obloquy

SocietyC2

Meaning: harsh criticism or public disgrace

Part of speech: noun

Example: He faced obloquy after the scandal.

Category: Society › Criticism

Synonyms:

disgrace
shame

obnoxious

SocietyB2

Meaning: extremely unpleasant

Part of speech: adjective

Example: His obnoxious behavior annoyed everyone.

Category: Society › Behavior

Synonyms:

offensive
disagreeable

Antonyms:

pleasant
agreeable

obo

ArtsC1

Meaning: a type of musical instrument, the oboe

Part of speech: noun

Example: He plays the obo in the orchestra.

Category: Arts › Music

Synonyms: oboe

oboe

ArtsB2

Meaning: a woodwind musical instrument

Part of speech: noun

Example: The oboe has a distinct sound.

Category: Arts › Music

Synonyms: woodwind

Oboist

ArtsC1

Meaning: a person who plays the oboe

Part of speech: noun

Example: The oboist performed beautifully at the concert.

Category: Arts › Music

Synonyms: obo player

O-bon

CultureC2

Meaning: a Japanese festival honoring deceased ancestors

Part of speech: noun

Example: O-bon is celebrated with lanterns and dances.

Category: Culture › Festivals

Synonyms: Obon

Obscene

SocietyC2

Meaning: offensive to morality

Part of speech: adjective

Example: The film was criticized for its obscene content.

Category: Society › Morality

Synonyms:

offensive
indecent

Antonyms:

decent
appropriate

Obscenity

SocietyC2

Meaning: the quality of being obscene

Part of speech: noun

Example: The obscenity of the material led to its ban.

Category: Society › Morality

Synonyms:

indecency
vulgarity

Obscurantism

PhilosophyC2

Meaning: the practice of deliberately preventing the facts or full details of something

Part of speech: noun

Example: Obscurantism can hinder progress in science.

Category: Philosophy › Knowledge

Synonyms:

ignorance
obfuscation

Obscurantist

PhilosophyC2

Meaning: a person who promotes obscurantism

Part of speech: noun

Example: The obscurantist resisted the new ideas.

Category: Philosophy › Knowledge

Synonyms: ignorant person

Obscure

LanguageC2

Meaning: to make something difficult to see or understand

Part of speech: verb

Example: The fog will obscure the view.

Category: Language › Communication

Synonyms:

hide
conceal

Antonyms:

reveal
clarify

Obscurity

GeneralC2

Meaning: the state of being unknown or not well-known

Part of speech: noun

Example: The author faded into obscurity after his first book.

Category: General

Synonyms:

unknown
unfamiliarity

Antonyms:

fame
recognition

Obsequies

SocietyC2

Meaning: funeral rites

Part of speech: noun

Example: The obsequies were held in a solemn manner.

Category: Society › Death

Synonyms:

funeral
rites

Obsequious

SocietyC2

Meaning: excessively eager to please

Part of speech: adjective

Example: His obsequious behavior made him unpopular.

Category: Society › Behavior

Synonyms:

fawning
servile

Antonyms:

assertive
independent

Observable

ScienceB2

Meaning: able to be seen or noticed

Part of speech: adjective

Example: The changes in the environment are observable.

Category: Science › Observation

Synonyms:

visible
noticeable

Antonyms:

invisible
unnoticeable

observance

CultureB2

Meaning: the act of following or obeying a rule or custom.

Part of speech: noun

Example: The observance of traditions is important in many cultures.

Category: Culture

Meaning 2: a ceremony or celebration.

Example: The observance of the holiday brought the community together.

Synonyms:

compliance
adherence

Antonyms:

disregard
neglect

observant

GeneralB1

Meaning: quick to notice things.

Part of speech: adjective

Example: She is very observant and always sees the details others miss.

Category: General

Synonyms:

perceptive
attentive

Antonyms:

oblivious
unaware

observation

ScienceB2

Meaning: the act of watching something carefully.

Part of speech: noun

Example: Her observation of the stars was fascinating.

Category: Science › Research

Meaning 2: a statement based on what has been seen or noticed.

Example: His observation about the weather was accurate.

Synonyms:

watching
noticing

Antonyms:

ignorance
overlooking

observational

ScienceC1

Meaning: related to the act of observing.

Part of speech: adjective

Example: The observational study provided valuable data.

Category: Science › Research

Synonyms:

watchful
perceptive

Antonyms:

unobservant
blind

observatory

ScienceB2

Meaning: a building or place for observing astronomical events.

Part of speech: noun

Example: The observatory is open to the public on weekends.

Category: Science › Astronomy

Synonyms:

watchtower
viewing station

observe

GeneralA2

Meaning: to watch carefully.

Part of speech: verb

Example: We need to observe the behavior of the animals.

Category: General

Meaning 2: to follow a rule or custom.

Example: They observe the laws of their country.

Phrase: observe a moment of silence

Phrase example: We will observe a moment of silence for the victims.

Synonyms:

watch
monitor

Antonyms:

ignore
overlook

observer

GeneralB1

Meaning: a person who watches or notices something.

Part of speech: noun

Example: The observer noted the changes in the environment.

Category: General

Synonyms:

witness
spectator

Antonyms:

participant
actor

obsess

PsychologyC1

Meaning: to think about something too much.

Part of speech: verb

Example: He tends to obsess over small details.

Category: Psychology

Synonyms:

preoccupy
haunt

Antonyms:

disregard
forget

obsessed

PsychologyC1

Meaning: having an excessive preoccupation with something.

Part of speech: adjective

Example: She is obsessed with her fitness routine.

Category: Psychology

Synonyms:

fixated
infatuated

Antonyms:

unconcerned
indifferent

Ask OneGoCube Words AI

Browse by Category

Browse by CEFR Level