Meaning: Used in writing to indicate that a quoted word or phrase is exactly as it appears in the original.

Part of speech: adverb

Example: He wrote, 'I love to eat pizza' (sic).

Category: Writing

Meaning: To collectively take a sick day as a form of protest.

Part of speech: verb

Example: The workers decided to sick out to demand better conditions.

Category: Work

Meaning: A genetic blood disorder that affects hemoglobin, leading to sickle-shaped red blood cells.

Part of speech: noun

Example: Sickle-cell anaemia can cause severe pain and other health complications.

Category: Medicine › Genetics

Synonyms: sickle-cell disease

Meaning: A slang term for a person who is perceived as strange or disturbing.

Part of speech: noun

Example: He was called a sicko for his bizarre behavior.

Category: Social

Synonyms: weirdo

Meaning: In a sideways manner.

Part of speech: adverb

Example: He glanced side long at the stranger.

Category: General

Meaning: A type of snake that moves sideways.

Part of speech: noun

Example: The side winder is known for its unique locomotion.

Category: Nature › Animals

Synonyms: sidewinder

Meaning: Positioned or viewed from the side.

Part of speech: adjective

Example: The side-on view of the building was impressive.

Category: General

Meaning: Relating to the stars or celestial bodies.

Part of speech: adjective

Example: The sidereal day is slightly shorter than a solar day.

Category: Astronomy

Meaning: To avoid or evade a question or issue.

Part of speech: verb

Example: He tried to sidestep the difficult question during the interview.

Category: Communication

Synonyms:

• evade
• dodge

Meaning: To divert attention from the main issue.

Part of speech: verb

Example: Let's not sidetrack the discussion with unrelated topics.

Category: Communication

Synonyms:

• distract
• divert

Meaning: A view from the side.

Part of speech: noun

Example: The sideview of the building highlighted its unique architecture.

Category: Architecture

Meaning: Toward the side.

Part of speech: adverb

Example: He glanced side-ward to see who was coming.

Category: General

Meaning: To move sideways, often in a stealthy manner.

Part of speech: verb

Example: He tried to sidle past the group without being noticed.

Category: Movement

Synonyms:

• sneak
• slip

Meaning: Sudden Infant Death Syndrome, the unexplained death of an infant during sleep.

Part of speech: noun

Example: Parents are advised to follow safe sleep practices to reduce the risk of SIDS.

Category: Health › Pediatrics

Meaning: A military operation where forces surround a place to cut off supplies.

Part of speech: noun

Example: The city was under siege for several months.

Category: Military

Synonyms: blockade

Meaning: A mindset where a group feels threatened and defensive.

Part of speech: noun

Example: The team developed a siege mentality after facing constant criticism.

Category: Psychology

Meaning: A unit of electrical conductance.

Part of speech: noun

Example: The circuit had a resistance of 2 siemens.

Category: Science › Physics

Meaning: A mountain range in the western United States.

Part of speech: noun

Example: The Sierra mountains are known for their stunning scenery.

Category: Geography

Meaning: A unit of measurement for radiation dose.

Part of speech: noun

Example: The doctor explained that the sievert measures the biological effect of radiation.

Category: Science › Radiation

Meaning: An imaginary line along which a person can see.

Part of speech: noun

Example: The architect ensured that every room had a clear sight-line to the garden.

Category: Arts › Architecture

Synonyms: line of sight

Meaning: The 18th letter of the Greek alphabet, often used in mathematics and science.

Part of speech: noun

Example: In statistics, sigma represents the standard deviation.

Category: Science › Mathematics

Meaning: A person who operates signals, especially in railways.

Part of speech: noun

Example: The signaller ensured the train departed on time.

Category: Transportation › Railways

Synonyms: signal operator

Meaning: A person who operates signals on a railway.

Part of speech: noun

Example: The signalman waved the flag to stop the train.

Category: Transportation › Railways

Synonyms: signaller

Meaning: A measure of the level of a desired signal to the level of background noise.

Part of speech: noun

Example: A high signal-to-noise ratio is crucial for clear audio.

Category: Science › Communication

Meaning: A person or organization that signs a document, especially a treaty.

Part of speech: noun

Example: Each signatory agreed to the terms of the contract.

Category: Law › Contracts

Synonyms:

• signer
• party

Meaning: The meaning or significance of something.

Part of speech: noun

Example: The signification of the symbol was debated among scholars.

Category: Arts › Linguistics

Synonyms:

• meaning
• interpretation

Meaning: The concept or meaning that a sign represents.

Part of speech: noun

Example: The signified of the word 'tree' is the actual object it refers to.

Category: Arts › Linguistics

Synonyms:

• meaning
• referent

Meaning: A device used to reduce noise, especially on firearms.

Part of speech: noun

Example: The detective used a silencer on his gun to avoid detection.

Category: Technology › Engineering

Synonyms: muffler

Meaning: A hard, unreactive compound found in sand and quartz.

Part of speech: noun

Example: Silica is used in the production of glass.

Category: Science › Chemistry

Synonyms: silicon dioxide

Meaning: A compound containing silicon, oxygen, and one or more metals.

Part of speech: noun

Example: Silicates are the most abundant minerals in the Earth's crust.

Category: Science › Geology

Synonyms: silicate mineral

Meaning: A lung disease caused by inhaling silica dust.

Part of speech: noun

Example: Silicosis can be prevented by wearing masks in dusty environments.

Category: Medicine › Respiratory Diseases

Synonyms: pneumonoconiosis

Meaning: The 25th anniversary of a significant event, especially a reign or marriage.

Part of speech: noun

Example: The queen celebrated her silver jubilee with a grand ceremony.

Category: Arts › Celebrations

Synonyms: 25th anniversary

Meaning: The side of a fish that is silver in color.

Part of speech: noun

Example: The silver side of the fish glimmered in the water.

Category: Nature › Zoology

Meaning: A craftsman who works with silver to create jewelry or other items.

Part of speech: noun

Example: The silver smith crafted a beautiful bracelet.

Category: Arts › Crafts

Synonyms: silversmith

Meaning: A fictional character in comic books who travels through space on a surfboard-like craft.

Part of speech: noun

Example: The Silver Surfer is known for his cosmic powers.

Category: Arts › Comics

Meaning: A type of fish known for its silver-colored tail.

Part of speech: noun

Example: The silver tail swam gracefully in the clear water.

Category: Nature › Marine Life

Meaning: The ability to speak persuasively or eloquently.

Part of speech: noun

Example: With his silver tongue, he convinced everyone to join his cause.

Category: Arts › Rhetoric

Synonyms:

• eloquence
• persuasiveness

Antonyms: tactlessness

Meaning: Relating to or resembling monkeys or apes.

Part of speech: adjective

Example: The simian features of the statue were striking.

Category: Science › Biology

Synonyms: primate

Meaning: The quality of being similar or alike; resemblance.

Part of speech: noun

Example: There is a similitude in their approaches to the problem.

Category: General

Synonyms:

• similarity
• likeness

Meaning: A type of fruitcake traditionally eaten at Easter, often decorated with marzipan.

Part of speech: noun

Example: She baked a simnel cake for the Easter celebration.

Category: Food › Baking

Synonyms: Easter cake