Meaning: The act of driving slowly along a street to look for prostitutes.

Part of speech: noun

Example: Kerb-crawling is illegal in many cities.

Category: Law › Criminal Law

Meaning: A commotion or fuss, especially one caused by conflicting views.

Part of speech: noun

Example: There was a kerfuffle over the new policy at the meeting.

Category: Politics

Meaning: A type of minimally invasive surgery performed through small incisions.

Part of speech: noun

Example: Keyhole surgery can lead to quicker recovery times.

Category: Medicine › Surgery

Synonyms: minimally invasive surgery

Meaning: The central stone at the summit of an arch, locking the whole arch together.

Part of speech: noun

Example: The keystone is crucial for the stability of the arch.

Category: Architecture › Construction

Synonyms: cornerstone

Meaning: A unit of frequency equal to one thousand hertz.

Part of speech: noun

Example: The radio station broadcasts at 100 kHz.

Category: Science › Physics

Synonyms: kilohertz

Meaning: To handle something delicately or carefully.

Part of speech: idiom

Example: You need to handle this situation with kid gloves.

Category: Communication › Care

Meaning: A type of medical imaging technique for kidneys.

Part of speech: noun

Example: The doctor ordered a kidney beam to check for issues.

Category: Medicine › Imaging

Synonyms: kidney scan

Meaning: A person who spoils the enjoyment of others.

Part of speech: idiom

Example: Don't be a kill joy; join the fun!

Category: Social › Behavior

Meaning: A highly aggressive species of bee known for its painful sting.

Part of speech: noun

Example: Killer bees can be dangerous if provoked.

Category: Nature › Animals

Synonyms: Africanized bee

Meaning: An oven used for firing ceramics or bricks.

Part of speech: noun

Example: The artist placed the pottery in the kiln.

Category: Arts › Ceramics

Synonyms: oven

Meaning: A prefix meaning one thousand.

Part of speech: prefix

Example: A kilogram is a kilo- unit of mass.

Category: Measurement › Prefixes

Meaning: A unit of frequency equal to one thousand hertz.

Part of speech: noun

Example: The sound system operates at 20 kilohertz.

Category: Science › Physics

Synonyms: kHz

Meaning: A state of proper order or condition.

Part of speech: noun

Example: Everything was out of kilter after the storm.

Category: Condition

Synonyms: order

Antonyms: disorder

Meaning: A person with whom one shares a deep connection or understanding.

Part of speech: noun

Example: She found a kindred spirit in her best friend.

Category: Relationships › Friendship

Synonyms: soulmate

Meaning: Relating to or resulting from motion.

Part of speech: adjective

Example: Kinetic energy is the energy of moving objects.

Category: Science › Physics

Synonyms: dynamic

Meaning: The energy an object possesses due to its motion.

Part of speech: noun

Example: A moving car has kinetic energy.

Category: Science › Physics

Synonyms: motion energy

Meaning: The most important person in a group or organization.

Part of speech: noun

Example: He is the kingpin of the local business community.

Category: Business

Synonyms:

• leader
• chief

Antonyms:

• follower
• subordinate

Meaning: Having unusual sexual preferences; also can mean twisted or curled.

Part of speech: adjective

Example: He has a kinky sense of humor.

Category: Arts

Synonyms:

• unconventional
• quirky

Antonyms:

• normal
• conventional

Meaning: The state of being related to others; family connection.

Part of speech: noun

Example: Their kinship was evident in their shared traits.

Category: Social

Synonyms:

• relationship
• affinity

Antonyms:

• alienation
• estrangement

Meaning: A clear, colorless fruit brandy made from cherries.

Part of speech: noun

Example: He enjoyed a glass of kirsch after dinner.

Category: Food

Synonyms:

• brandy
• liquor

Meaning: A quality mark awarded to products that meet certain standards.

Part of speech: noun

Example: The product has a kitemark for safety.

Category: Business

Synonyms:

• quality mark
• certification

Meaning: Art or objects that are considered to be in poor taste due to their overly sentimental nature.

Part of speech: noun

Example: The store sells a lot of kitsch items.

Category: Arts

Synonyms:

• tacky
• camp

Antonyms:

• artistry
• tastefulness

Meaning: A clumsy or inelegant solution to a problem, often using parts from different sources.

Part of speech: noun

Example: The software was a kludge that barely worked.

Category: Technology

Synonyms:

• hack
• fix

Antonyms:

• elegance
• perfection

Meaning: A person who buys and processes old animals for meat or other products.

Part of speech: noun

Example: The knacker took the old horse away.

Category: Food

Synonyms:

• butcher
• processor

Meaning: The small bone that covers the knee joint.

Part of speech: noun

Example: He fractured his kneecap during the accident.

Category: Health

Synonyms: patella

Meaning: Referring to an automatic or reflexive response.

Part of speech: adjective

Example: His knee-jerk reaction was to defend his friend.

Category: Psychology

Synonyms:

• automatic
• instinctive

Antonyms:

• thoughtful
• deliberate

Meaning: Indirectly resulting from something.

Part of speech: adjective

Example: The policy changes had a knock-on effect on the economy.

Category: Politics

Synonyms:

• secondary
• indirect

Antonyms:

• direct
• immediate

Meaning: Full of knots; complicated or difficult.

Part of speech: adjective

Example: The knotty problem took hours to solve.

Category: Science › Mathematics

Synonyms:

• complicated
• difficult

Antonyms:

• simple
• easy

Meaning: In a way that shows awareness or intention.

Part of speech: adverb

Example: He knowingly broke the rules.

Category: Education

Synonyms:

• deliberately
• intentionally

Antonyms:

• unintentionally
• accidentally

Meaning: To yield or submit to pressure or authority.

Part of speech: verb

Example: He refused to knuckle under to the demands of his boss.

Category: Politics

Synonyms:

• submit
• yield

Antonyms:

• resist
• defy

Meaning: Relating to the Koran.

Part of speech: adjective

Example: The koranic teachings emphasize compassion.

Category: Religion › Islam

Synonyms: Quranic

Meaning: To show excessive respect or obedience.

Part of speech: verb

Example: He refused to kowtow to the demands of his superiors.

Category: Politics

Synonyms:

• submit
• yield

Antonyms:

• defy
• resist

Meaning: A chemical element with the symbol Kr, used in lighting and photography.

Part of speech: noun

Example: Krypton is often used in high-performance light bulbs.

Category: Science › Chemistry

Synonyms: Kr

Meaning: the outer and inner folds of skin surrounding the vaginal opening

Part of speech: noun

Example: The labia are part of female anatomy.

Category: Medicine › Anatomy

Meaning: related to the lips

Part of speech: adjective

Example: Labial sounds are produced with the lips.

Category: Language › Phonetics

Meaning: produced with the lower lip and upper teeth

Part of speech: adjective

Example: The sounds 'f' and 'v' are labiodental.

Category: Language › Phonetics

Meaning: produced with both lips and the back of the tongue

Part of speech: adjective

Example: The sound 'w' is labiovelar.

Category: Language › Phonetics

Meaning: done with great effort

Part of speech: adjective

Example: His labored breathing indicated he was tired.

Category: Health › Physical Condition

Synonyms: strained

Antonyms: easy

Meaning: done with difficulty

Part of speech: adjective

Example: His laboured speech showed he was nervous.

Category: Communication

Synonyms: strained

Antonyms: smooth

Meaning: requiring a lot of work

Part of speech: adjective

Example: The project was labour-intensive and took months to complete.

Category: Business › Production

Synonyms: work-intensive