Meaning: A semicircular recess in a church, typically at the east end.

Part of speech: noun

Example: The altar is located in the apse of the cathedral.

Category: Architecture

Synonyms:

• recess
• niche

Meaning: The action of a vehicle losing traction on wet surfaces.

Part of speech: noun

Example: Aquaplaning can be dangerous during heavy rain.

Category: Transportation › Driving Safety

Synonyms: hydroplaning

Meaning: A printmaking technique that creates tonal effects.

Part of speech: noun

Example: The artist used aquatint to enhance the depth of the image.

Category: Arts › Techniques

Synonyms:

• printmaking
• etching

Meaning: A structure for conveying water, typically in the form of a bridge.

Part of speech: noun

Example: The ancient aqueduct is still standing today.

Category: Engineering › Water Management

Synonyms:

• waterway
• conduit

Meaning: Related to, or resembling water.

Part of speech: adjective

Example: The aqueous solution was used in the experiment.

Category: Science › Chemistry

Synonyms:

• watery
• liquid

Meaning: The clear fluid in the front part of the eye.

Part of speech: noun

Example: The aqueous humour helps maintain eye pressure.

Category: Medicine › Ophthalmology

Synonyms: eye fluid

Meaning: A geological formation that can store and transmit water.

Part of speech: noun

Example: The aquifer supplies water to the nearby town.

Category: Geology

Synonyms:

• water-bearing layer
• water source

Meaning: Having a hooked nose or profile.

Part of speech: adjective

Example: He had an aquiline nose that gave him a distinguished look.

Category: General

Synonyms:

• hooked
• curved

Meaning: A scholar or expert in Arabic language and culture.

Part of speech: noun

Example: The Arabist gave a lecture on Middle Eastern history.

Category: Education › Linguistics

Synonyms:

• Arab scholar
• Arabic expert

Meaning: An intense fear of spiders.

Part of speech: noun

Example: Her arachnophobia made it difficult for her to enter the room.

Category: Psychology › Phobias

Synonyms:

• spider fear
• spider phobia

Meaning: A type of alcoholic beverage made from aniseed.

Part of speech: noun

Example: He enjoyed a glass of arak with his meal.

Category: Food › Beverages

Synonyms:

• liquor
• spirit

Meaning: A group of islands in the Atlantic Ocean, part of Ireland.

Part of speech: noun

Example: The Aran Islands are known for their rugged beauty.

Category: Geography › Islands

Synonyms: islands

Meaning: A person who settles a dispute or has ultimate authority.

Part of speech: noun

Example: The arbiter made a fair decision.

Category: Law › Dispute Resolution

Synonyms:

• judge
• mediator

Meaning: The simultaneous buying and selling of assets to profit from price differences.

Part of speech: noun

Example: Arbitrage can be risky but profitable.

Category: Finance › Investments

Synonyms:

• trading
• speculation

Meaning: A person who engages in arbitrage.

Part of speech: noun

Example: The arbitrager took advantage of market fluctuations.

Category: Finance › Investments

Synonyms:

• trader
• speculator

Meaning: The process of resolving a dispute by a third party.

Part of speech: noun

Example: Arbitration is often faster than going to court.

Category: Law › Dispute Resolution

Synonyms:

• mediation
• settlement

Meaning: A person appointed to settle a dispute.

Part of speech: noun

Example: The arbitrator listened to both sides before making a decision.

Category: Law › Dispute Resolution

Synonyms:

• mediator
• judge

Meaning: Relating to trees.

Part of speech: adjective

Example: The arboreal habitat is home to many species.

Category: Nature

Synonyms:

• tree-dwelling
• wooded

Meaning: A place where trees and shrubs are grown for study and display.

Part of speech: noun

Example: The arboretum features a variety of tree species.

Category: Nature › Botany

Synonyms:

• tree garden
• plantation

Meaning: The cultivation and management of trees.

Part of speech: noun

Example: Arboriculture is important for urban planning.

Category: Agriculture › Forestry

Synonyms:

• tree care
• tree management

Meaning: A shady garden alcove with sides and a roof formed by trees or climbing plants.

Part of speech: noun

Example: They sat in the arbour to enjoy the cool breeze.

Category: Nature › Gardens

Synonyms:

• bower
• shade

Meaning: A type of tree or shrub with red berries.

Part of speech: noun

Example: The arbutus tree is known for its beautiful bark.

Category: Nature › Plants

Synonyms: strawberry tree

Meaning: A type of lamp that produces light by an electric arc.

Part of speech: noun

Example: The arc lamp illuminated the entire room.

Category: Technology › Lighting

Synonyms:

• arc light
• electric lamp

Meaning: A bright light produced by an electric arc.

Part of speech: noun

Example: The arc light was used in the theater for dramatic effects.

Category: Technology › Lighting

Synonyms:

• arc lamp
• electric light

Meaning: A vision of pastoralism and harmony with nature.

Part of speech: noun

Example: The painting depicted an idyllic Arcadia.

Category: Arts › Literature

Synonyms:

• paradise
• utopia

Meaning: Relating to Arcadia, often idealizing rural life.

Part of speech: adjective

Example: The Arcadian landscape was serene and beautiful.

Category: Arts

Synonyms:

• pastoral
• idyllic

Meaning: Secrets or mysteries, especially those related to a particular subject.

Part of speech: noun

Example: The arcana of ancient rituals fascinated the researchers.

Category: Arts

Synonyms:

• mysteries
• secrets

Meaning: Known or understood by only a few; mysterious.

Part of speech: adjective

Example: The professor's lecture on arcane theories was difficult to follow.

Category: Arts

Synonyms:

• mysterious
• esoteric

Antonyms:

• clear
• obvious

Meaning: A genus of bird-like dinosaurs that is considered a transitional fossil between dinosaurs and modern birds.

Part of speech: noun

Example: The archaeopteryx is often cited as evidence of evolution.

Category: Science › Paleontology

Meaning: A word or expression that is no longer in common use.

Part of speech: noun

Example: Using archaism can give a text an old-fashioned feel.

Category: Language

Synonyms:

• antiquity
• relic

Meaning: A chief angel, often regarded as a leader among angels.

Part of speech: noun

Example: In many religions, the archangel Michael is considered a protector.

Category: Religion

Synonyms:

• chief angel
• angelic leader

Meaning: The jurisdiction or office of an archbishop.

Part of speech: noun

Example: The archbishopric was established in the 12th century.

Category: Religion

Synonyms:

• archdiocese
• bishopric

Meaning: A cleric in the church who assists the bishop.

Part of speech: noun

Example: The archdeacon organized the charity event.

Category: Religion

Synonyms:

• senior cleric
• church officer

Meaning: The wife of an archduke or a female holding the rank of archduke.

Part of speech: noun

Example: The archduchess attended the royal gala.

Category: Politics › Monarchy

Synonyms:

• noblewoman
• royalty

Meaning: A nobleman of high rank, especially in the former Holy Roman Empire.

Part of speech: noun

Example: The archduke was a key figure in European politics.

Category: Politics › Monarchy

Synonyms:

• noble
• royalty

Meaning: In a manner relating to archaeology.

Part of speech: adverb

Example: The site was archeologically significant due to its age.

Category: Science › Archaeology

Meaning: Representing the most typical example of a certain person or thing.

Part of speech: adjective

Example: She is the archetypal student, always eager to learn.

Category: Arts

Synonyms:

• typical
• exemplary

Meaning: Relating to an archetype; typical of its kind.

Part of speech: adjective

Example: His behavior was archetypical of a leader.

Category: Arts

Synonyms:

• typical
• representative

Meaning: Relating to the structure or design of a building.

Part of speech: adjective

Example: The architectonic features of the building were impressive.

Category: Arts › Architecture

Synonyms:

• structural
• design-related

Meaning: A migratory seabird known for its long migrations between the Arctic and Antarctic.

Part of speech: noun

Example: The Arctic tern travels thousands of miles each year.

Category: Nature › Birds

Synonyms:

• seabird
• tern