Meaning: a person who works in the field of rocket science.

Part of speech: noun

Example: He is a rocket scientist who designs spacecraft.

Category: Science › Aerospace

Synonyms: aerospace engineer

Meaning: a style of art and architecture characterized by elaborate ornamentation.

Part of speech: adjective

Example: The rococo style is evident in the palace's design.

Category: Arts › Architecture

Synonyms:

• ornate
• elaborate

Antonyms:

• simple
• plain

Meaning: a dishonest or unprincipled person.

Part of speech: noun

Example: He was known as a rogue in the business world.

Category: Law › Criminal Law

Synonyms:

• scoundrel
• rascal

Antonyms:

• honest person
• saint

Meaning: a nation that acts outside international law.

Part of speech: noun

Example: The rogue state was sanctioned by the UN.

Category: Politics › International Relations

Synonyms:

• outlaw state
• pariah state

Meaning: a trader who acts independently and illegally, often causing financial loss.

Part of speech: noun

Example: The rogue trader lost millions for the bank.

Category: Business › Finance

Synonyms:

• fraudster
• scammer

Meaning: a collection of photographs of known criminals.

Part of speech: noun

Example: The police showed him the rogues gallery.

Category: Law › Criminal Law

Synonyms:

• criminal lineup
• mugshots

Meaning: a drug used to treat insomnia, often misused as a date-rape drug.

Part of speech: noun

Example: Rohypnol is illegal in many countries.

Category: Medicine › Pharmacology

Synonyms: flunitrazepam

Meaning: to disturb or agitate.

Part of speech: verb

Example: The storm began to roil the sea.

Category: Nature › Weather

Synonyms:

• stir
• disturb

Antonyms:

• calm
• settle

Meaning: A movement in art and literature that emphasized emotion and individualism.

Part of speech: noun

Example: Romanticism celebrated nature and the beauty of the individual.

Category: Arts › Literature

Synonyms: romantic movement

Meaning: Having rough shoes or hooves, often used metaphorically to mean acting without regard for others.

Part of speech: adjective

Example: The company went roughshod over the community's concerns.

Category: Politics

Synonyms:

• overbearing
• domineering

Antonyms:

• considerate
• gentle

Meaning: A meeting where participants discuss matters equally, often used in a formal context.

Part of speech: noun

Example: The round table discussion included experts from various fields.

Category: Politics

Synonyms:

• discussion
• forum

Meaning: A tournament format where each participant plays against every other participant.

Part of speech: noun

Example: The chess tournament was organized in a round-robin format.

Category: Sports

Synonyms:

• tournament
• competition

Meaning: A type of parasitic worm that can infect humans and animals.

Part of speech: noun

Example: Roundworm infections can be treated with medication.

Category: Medicine › Parasitology

Synonyms: nematode

Meaning: To force someone to get up or move, often used informally.

Part of speech: verb

Example: He had to roust his friend from bed for the trip.

Category: Psychology

Synonyms:

• wake
• stir

Antonyms:

• settle
• calm

Meaning: To defeat an opponent decisively.

Part of speech: verb

Example: The team routed their rivals in the championship game.

Category: Sports

Synonyms:

• defeat
• overwhelm

Antonyms:

• lose
• succumb

Meaning: To withdraw or retract a statement or position.

Part of speech: phrasal verb

Example: The politician had to row back on his earlier comments.

Category: Politics

Synonyms:

• retract
• withdraw

Antonyms:

• maintain
• uphold

Meaning: A substance produced by bees, used to nourish larvae and the queen bee.

Part of speech: noun

Example: Royal jelly is often marketed as a health supplement.

Category: Science › Biology

Synonyms: bee secretion

Meaning: A person who supports the monarchy.

Part of speech: noun

Example: The royalist expressed his views during the debate.

Category: Politics

Synonyms:

• monarchist
• loyalist

Antonyms:

• republican
• anti-monarchist

Meaning: In a manner befitting royalty; very well.

Part of speech: adverb

Example: She was royally entertained at the gala.

Category: Arts

Synonyms:

• lavishly
• magnificently

Meaning: Revolutions per minute, a measure of rotational speed.

Part of speech: noun

Example: The engine runs at 3000 rpm.

Category: Science › Physics

Synonyms: revolutions per minute

Meaning: Repetitive Strain Injury, a condition caused by repetitive motion.

Part of speech: noun

Example: He developed RSI from typing too much.

Category: Medicine › Health

Synonyms: overuse injury

Meaning: Right Honourable, a title given to certain members of the British Parliament.

Part of speech: phrase

Example: The Rt Hon member spoke at the debate.

Category: Politics

Meaning: A non-lethal projectile made of rubber, used for crowd control.

Part of speech: noun

Example: The police used rubber bullets to disperse the crowd.

Category: Law › Crowd Control

Synonyms: non-lethal round

Meaning: A contagious viral infection, also known as German measles.

Part of speech: noun

Example: Rubella can cause serious complications during pregnancy.

Category: Medicine › Infectious Diseases

Synonyms: German measles

Meaning: A point of no return, often used metaphorically.

Part of speech: noun

Example: Crossing the Rubicon meant he could not turn back.

Category: History

Synonyms: point of no return

Meaning: Expressing sorrow or regret.

Part of speech: adjective

Example: She gave a rueful smile after her mistake.

Category: Emotions

Synonyms:

• regretful
• sorrowful

Meaning: A violent or lawless person.

Part of speech: noun

Example: The ruffian was arrested for causing trouble.

Category: Law › Criminal Law

Synonyms:

• thug
• bully

Meaning: The principle that all people are subject to the law.

Part of speech: noun

Example: The rule of law is essential for justice.

Category: Law › Legal Principles

Synonyms:

• lawfulness
• justice

Meaning: Noisy and energetic; rowdy.

Part of speech: adjective

Example: The rumbustious children played in the park.

Category: Social

Synonyms:

• boisterous
• rowdy

Meaning: The act of thinking deeply about something.

Part of speech: noun

Example: His rumination on the topic led to new insights.

Category: Psychology

Synonyms:

• reflection
• contemplation

Meaning: Characterized by deep or serious thought.

Part of speech: adjective

Example: His ruminative nature made him a great philosopher.

Category: Psychology

Synonyms:

• thoughtful
• reflective

Meaning: A person who spreads rumors.

Part of speech: noun

Example: He was known as a rumour-monger in the office.

Category: Social

Synonyms:

• gossip
• tattler

Meaning: To encounter difficulties or obstacles.

Part of speech: phrasal verb

Example: They ran up against several challenges during the project.

Category: Business › Management

Synonyms:

• face
• encounter

Meaning: A dangerous game of chance involving a loaded gun.

Part of speech: noun

Example: Playing Russian roulette is extremely risky.

Category: General

Meaning: A person who steals cattle.

Part of speech: noun

Example: The rustler was caught trying to steal the farmer's cows.

Category: Law › Criminal Law

Synonyms: cattle thief

Meaning: The mating season of certain animals, especially deer.

Part of speech: noun

Example: The rutting season brings many deer to the area.

Category: Nature

Synonyms: mating season

Meaning: to deliberately destroy or damage something

Part of speech: verb

Example: They tried to sabotage the project.

Category: Politics

Meaning: a person who sabotages

Part of speech: noun

Example: The saboteur was caught before he could cause damage.

Category: Politics

Meaning: the act of displaying military power to intimidate

Part of speech: noun

Example: The country's sabre-rattling worried its neighbors.

Category: Politics

Meaning: relating to priests or the priesthood

Part of speech: adjective

Example: His sacerdotal duties kept him busy.

Category: Religion