Meaning: The practice of being married to one person at a time.

Part of speech: noun

Example: Monogamy is common in many cultures.

Category: Relationships › Dating

Synonyms:

• marriage
• union

Antonyms: polygamy

Meaning: A large, upright stone or rock, often used as a monument.

Part of speech: noun

Example: The ancient monolith stood tall in the desert.

Category: History › Archaeology

Synonyms:

• stone
• rock

Meaning: Formed of a single large block of stone or material.

Part of speech: adjective

Example: The monolithic structure was impressive.

Category: Architecture

Synonyms:

• solid
• massive

Meaning: A long speech by one person in a play or performance.

Part of speech: noun

Example: The actor delivered a powerful monologue.

Category: Arts › Theater

Synonyms:

• speech
• soliloquy

Meaning: A flavor enhancer commonly used in food.

Part of speech: noun

Example: Many Asian dishes contain monosodium glutamate for added flavor.

Category: Food › Additives

Synonyms: MSG

Meaning: Consisting of one syllable.

Part of speech: adjective

Example: The word 'cat' is monosyllabic.

Category: Language › Phonetics

Synonyms: single-syllable

Antonyms: polysyllabic

Meaning: A word consisting of one syllable.

Part of speech: noun

Example: The word 'dog' is a monosyllable.

Category: Language › Phonetics

Synonyms: single-syllable word

Antonyms: polysyllable

Meaning: Lack of variety and interest; tedious repetition.

Part of speech: noun

Example: He was tired of the monotony of his daily routine.

Category: Emotion › Experience

Synonyms:

• tedium
• sameness

Antonyms:

• variety
• excitement

Meaning: A title of honor given to certain priests in the Catholic Church.

Part of speech: noun

Example: Monsignor Smith will lead the service this Sunday.

Category: Religion › Christianity

Synonyms: priest

Meaning: Something that is very large and ugly.

Part of speech: noun

Example: The building was considered a monstrosity by the locals.

Category: Arts › Architecture

Synonyms:

• abomination
• eyesore

Meaning: A series of images or clips edited together.

Part of speech: noun

Example: The film used a montage to show the passage of time.

Category: Arts › Film

Synonyms:

• collage
• compilation

Meaning: Of great importance or significance.

Part of speech: adjective

Example: The discovery was a monumental achievement in science.

Category: History

Synonyms:

• historic
• significant

Antonyms:

• insignificant
• trivial

Meaning: A ray of light from the moon.

Part of speech: noun

Example: She danced in the moonbeam.

Category: Nature › Astronomy

Synonyms: moonlight

Meaning: Illuminated by the light of the moon.

Part of speech: adjective

Example: The garden looked beautiful in the moonlit night.

Category: Nature › Astronomy

Synonyms: illuminated

Meaning: Relating to the Moors, a group of Muslim peoples from North Africa.

Part of speech: adjective

Example: The architecture has a distinct Moorish style.

Category: Culture › History

Synonyms:

• Islamic
• Arabic

Meaning: Something that improves morale.

Part of speech: noun

Example: The surprise party was a great morale booster for the team.

Category: Social › Psychology

Synonyms:

• encouragement
• inspiration

Meaning: Having a positive effect on morale.

Part of speech: adjective

Example: The morale-boosting speech inspired everyone.

Category: Social › Psychology

Synonyms:

• uplifting
• encouraging

Meaning: Principles concerning the distinction between right and wrong.

Part of speech: noun

Example: Morality varies between cultures.

Category: Philosophy › Ethics

Synonyms:

• ethics
• principles

Antonyms:

• immorality
• unethical behavior

Meaning: Having a taste that makes you want to eat more.

Part of speech: adjective

Example: These cookies are so moreish!

Category: Food › Taste

Synonyms:

• addictive
• irresistible

Meaning: In addition to; besides.

Part of speech: adverb

Example: She is talented; moreover, she is hardworking.

Category: Language › Connectors

Synonyms:

• furthermore
• also

Meaning: A place where dead bodies are kept.

Part of speech: noun

Example: The detective visited the morgue for evidence.

Category: Medicine › Forensics

Synonyms:

• mortuary
• coroner's office

Meaning: A medication taken after unprotected sex to prevent pregnancy.

Part of speech: noun

Example: She took the morning-after pill as a precaution.

Category: Medicine › Reproductive Health

Synonyms: emergency contraceptive

Meaning: Extremely foolish or stupid.

Part of speech: adjective

Example: That was a moronic decision.

Category: Social › Behavior

Synonyms:

• foolish
• stupid

Antonyms:

• wise
• intelligent

Meaning: Sullen and ill-tempered.

Part of speech: adjective

Example: He became morose after hearing the bad news.

Category: Emotion

Synonyms:

• gloomy
• sullen

Antonyms:

• cheerful
• happy

Meaning: Subject to death; human.

Part of speech: adjective

Example: All mortal beings must eventually die.

Category: Philosophy

Synonyms:

• human
• earthly

Antonyms:

• immortal
• eternal

Meaning: A type of lock that fits into a hole cut into the door or frame.

Part of speech: noun

Example: He installed a mortice lock for added security.

Category: Security › Locks

Synonyms:

• deadlock
• lock

Meaning: Great embarrassment or shame.

Part of speech: noun

Example: He felt a sense of mortification after tripping in front of everyone.

Category: Psychology

Synonyms:

• embarrassment
• shame

Antonyms:

• pride
• confidence

Meaning: To cause someone to feel embarrassed or ashamed.

Part of speech: verb

Example: His comments mortified her in front of her friends.

Category: Psychology

Synonyms:

• embarrass
• humiliate

Antonyms:

• comfort
• reassure

Meaning: A lock that fits into a recess in the door, providing security.

Part of speech: noun

Example: The carpenter installed a mortise lock for better safety.

Category: Security › Locks

Synonyms:

• deadlock
• lock

Meaning: The head of a convent of nuns.

Part of speech: noun

Example: The mother superior led the prayer service.

Category: Religion › Christianity

Synonyms:

• head nun
• superior

Meaning: Without a mother; orphaned.

Part of speech: adjective

Example: The motherless child was cared for by relatives.

Category: Family

Synonyms:

• orphaned
• bereaved

Meaning: Composed of diverse or mixed elements.

Part of speech: adjective

Example: The motley crew of performers entertained the audience.

Category: General

Synonyms:

• varied
• mixed

Antonyms:

• uniform
• homogeneous

Meaning: A person who talks excessively or rapidly.

Part of speech: noun

Example: He's such a motormouth; he never stops talking!

Category: General

Synonyms:

• talkative person
• chatterbox

Meaning: Marked with spots or blotches of different colors.

Part of speech: adjective

Example: The mottled surface of the stone was beautiful.

Category: General

Synonyms:

• spotted
• blotchy

Antonyms:

• uniform
• solid

Meaning: To decay or disintegrate slowly.

Part of speech: verb

Example: The old book began to moulder on the shelf.

Category: General

Synonyms:

• decay
• deteriorate

Antonyms:

• improve
• develop

Meaning: To shed old feathers, hair, or skin to make way for new growth.

Part of speech: verb

Example: Birds moult their feathers in the spring.

Category: Nature › Biology

Synonyms:

• shed
• cast

Meaning: The sport or activity of climbing mountains.

Part of speech: noun

Example: Mountaineering requires physical strength and endurance.

Category: Sports › Climbing

Synonyms:

• climbing
• alpinism

Meaning: Expressing or feeling sorrow or sadness.

Part of speech: adjective

Example: Her mournful song touched everyone's heart.

Category: Arts › Literature

Synonyms:

• sorrowful
• sad

Antonyms:

• joyful
• cheerful

Meaning: Resembling a mouse; timid or shy.

Part of speech: adjective

Example: She had a mousey demeanor and rarely spoke up.

Category: Arts › Character Traits

Synonyms:

• timid
• shy

Antonyms:

• bold
• confident

Meaning: Having a moustache.

Part of speech: adjective

Example: The moustachioed man smiled at the camera.

Category: Arts › Grooming

Synonyms: mustached