Meaning: The study of the movements of celestial bodies and their influence on human affairs.

Part of speech: noun

Example: Many people believe in astrology.

Category: Science › Astronomy

Synonyms:

• horoscopy
• zodiac

Meaning: The branch of astronomy that deals with the measurement of the positions and movements of celestial bodies.

Part of speech: noun

Example: Astrometry is essential for understanding the universe.

Category: Science › Astronomy

Synonyms:

• celestial measurement
• astronomical measurement

Meaning: A scientist who specializes in astrophysics.

Part of speech: noun

Example: An astrophysicist studies the properties of stars and galaxies.

Category: Science › Astronomy

Synonyms: cosmologist

Meaning: The branch of astronomy concerned with the physical properties and behavior of celestial bodies and the universe.

Part of speech: noun

Example: Astrophysics combines physics and astronomy to understand the universe.

Category: Science › Astronomy

Synonyms: cosmophysics

Meaning: Into separate parts; apart.

Part of speech: adverb

Example: The storm tore the old tree asunder.

Category: General

Synonyms:

• apart
• divided

Antonyms:

• together
• united

Meaning: Bars that are not equal in length or size, often used in construction or design.

Part of speech: noun

Example: The architect used asymmetric bars to create a modern look.

Category: General

Meaning: In a way that is not symmetrical.

Part of speech: adverb

Example: The objects were arranged asymmetrically on the table.

Category: General

Meaning: Lack of equality or equivalence between parts or aspects of something; imbalance.

Part of speech: noun

Example: The asymmetry in the design made it more interesting.

Category: General

Synonyms:

• imbalance
• inequality

Antonyms:

• symmetry
• balance

Meaning: Showing no symptoms of a disease or condition.

Part of speech: adjective

Example: The patient was asymptomatic and did not require treatment.

Category: Medicine

Synonyms: symptomless

Antonyms: symptomatic

Meaning: Not occurring at the same time; out of sync.

Part of speech: adjective

Example: The asynchronous communication allowed students to learn at their own pace.

Category: Technology

Synonyms: unsynchronized

Antonyms: synchronous

Meaning: Relating to or characterized by reversion to an earlier type; primitive.

Part of speech: adjective

Example: His atavistic instincts drove him to seek survival.

Category: General

Synonyms:

• primitive
• ancient

Antonyms:

• modern
• advanced

Meaning: A neurological condition characterized by a lack of voluntary coordination of muscle movements.

Part of speech: noun

Example: Ataxia can affect balance and speech.

Category: Medicine

Synonyms: uncoordination

Meaning: Not affected by the passage of time; timeless.

Part of speech: adjective

Example: The atemporal quality of the artwork makes it relevant across generations.

Category: Arts

Synonyms:

• timeless
• eternal

Antonyms:

• temporary
• fleeting

Meaning: The absence of belief in the existence of deities.

Part of speech: noun

Example: Atheism is a worldview that does not include belief in gods.

Category: Religion

Synonyms:

• nonbelief
• disbelief

Antonyms:

• theism
• faith

Meaning: From side to side; across.

Part of speech: preposition

Example: The bridge was built athwart the river.

Category: General

Synonyms:

• across
• crosswise

Meaning: A political and cultural ideology that emphasizes the importance of transatlantic relations.

Part of speech: noun

Example: Atlanticism promotes cooperation between Europe and North America.

Category: Politics

Synonyms: transatlanticism

Meaning: A person who advocates for strong transatlantic relations.

Part of speech: noun

Example: An Atlanticist believes in the importance of NATO.

Category: Politics

Synonyms: transatlanticist

Meaning: A legendary island mentioned in ancient Greek mythology, often associated with advanced civilization.

Part of speech: noun

Example: Many stories have been told about the lost city of Atlantis.

Category: Mythology

Synonyms: mythical island

Meaning: The study of the atmosphere and its phenomena.

Part of speech: noun

Example: Atmospherics can help predict weather changes.

Category: Science

Meaning: A bomb that uses nuclear reactions to release a massive amount of energy.

Part of speech: noun

Example: The atom bomb was developed during World War II.

Category: Science › Physics

Synonyms: nuclear bomb

Meaning: A clock that uses the vibrations of atoms to measure time with high precision.

Part of speech: noun

Example: An atomic clock is used to keep accurate time in GPS systems.

Category: Science › Physics

Synonyms: precision clock

Meaning: The mass of an atom, typically expressed in atomic mass units (amu).

Part of speech: noun

Example: The atomic mass of carbon is approximately 12 amu.

Category: Science › Chemistry

Synonyms: atomic weight

Meaning: The number of protons in the nucleus of an atom, which determines the element's identity.

Part of speech: noun

Example: The atomic number of hydrogen is 1.

Category: Science › Chemistry

Meaning: The spectrum of frequencies of electromagnetic radiation emitted by an atom.

Part of speech: noun

Example: The atomic spectrum can be used to identify elements.

Category: Science › Physics

Meaning: The theory that matter is composed of discrete units called atoms.

Part of speech: noun

Example: Atomic theory is fundamental to modern chemistry.

Category: Science › Chemistry

Synonyms: atomic model

Meaning: The average mass of an element's atoms, usually expressed in atomic mass units (amu).

Part of speech: noun

Example: The atomic weight of oxygen is approximately 16 amu.

Category: Science › Chemistry

Synonyms: atomic mass

Meaning: The number of atoms in a molecule or the property of being atomic.

Part of speech: noun

Example: Atomicity is important in understanding molecular structures.

Category: Science › Chemistry

Meaning: The theory that matter is composed of discrete units called atoms.

Part of speech: noun

Example: Atomism has been a fundamental concept in science.

Category: Science › Chemistry

Synonyms: atomic theory

Meaning: To break down into atoms or smaller particles.

Part of speech: verb

Example: The scientist aimed to atomize the substance for analysis.

Category: Science › Chemistry

Synonyms:

• fragment
• disintegrate

Meaning: Not having a key or tonal center; lacking a tonal quality.

Part of speech: adjective

Example: Atonal music can be challenging to listen to.

Category: Arts › Music

Synonyms: non-tonal

Antonyms:

• tonal
• melodic

Meaning: The absence of a tonal center in music; a characteristic of atonal music.

Part of speech: noun

Example: Atonality is a key feature of some modern compositions.

Category: Arts › Music

Synonyms: non-tonality

Meaning: To make amends or reparation for a wrongdoing.

Part of speech: verb

Example: He tried to atone for his mistakes by helping others.

Category: General

Synonyms:

• redeem
• make amends

Antonyms:

• offend
• wrong

Meaning: Reparation for a wrong or injury; the act of making amends.

Part of speech: noun

Example: He sought atonement for his past actions.

Category: General

Synonyms:

• reparation
• redemption

Meaning: Lacking normal muscle tone or strength.

Part of speech: adjective

Example: The atonic muscles required therapy to regain strength.

Category: Medicine

Synonyms:

• weak
• flaccid

Antonyms:

• strong
• toned

Meaning: Relating to a genetic tendency to develop allergic reactions.

Part of speech: adjective

Example: Atopic dermatitis is a common skin condition.

Category: Medicine

Synonyms: allergic

Meaning: Extremely bad or unpleasant.

Part of speech: adjective

Example: The service at the restaurant was atrocious.

Category: General

Synonyms:

• terrible
• awful

Antonyms:

• excellent
• wonderful

Meaning: An extremely wicked or cruel act.

Part of speech: noun

Example: The war was marked by numerous atrocities.

Synonyms:

• horror
• outrage

Antonyms:

• goodness
• virtue

Meaning: A fragrant essential oil derived from flowers.

Part of speech: noun

Example: She wore a perfume made from attar.

Category: Arts › Perfume

Synonyms:

• fragrance
• scent

Meaning: A facility where individuals are required to attend for various reasons, often related to rehabilitation.

Part of speech: noun

Example: He was ordered to attend an attendance centre for counseling.

Category: Education › Rehabilitation

Synonyms:

• rehabilitation center
• counseling center

Meaning: A condition characterized by difficulties in maintaining attention.

Part of speech: noun

Example: Children with attention deficit disorder may struggle in school.

Category: Medicine › Psychology

Synonyms:

• ADD
• attention disorder