Alphabetical word directory
English words starting with I
Showing words 1–120 of 2,250. Choose a word to read its meaning, etymology and origin.
I
pronUsed by a speaker or writer to refer to himself or herself.
i-beam
nA steel girder or joist with a cross-section shaped like the capital letter 'I', used in construction.
iambic
adjof, relating to, or using a metrical foot in poetry consisting of one short (or unstressed) syllable followed by one long (or stressed) syllable.
iatrogenic
adj(of a medical condition) caused by the diagnosis, manner, or treatment of a physician.
iberian
adjRelating to Iberia, which is the peninsula comprising Spain and Portugal, or its ancient or modern peoples and cultures.
ibex
nA wild mountain goat with long, curved horns, found in parts of Europe, Asia, and northeastern Africa.
ibis
nA large wading bird with a long down-curved bill, long neck, and long legs.
ibm-compatible
adj(of a computer or software) able to work with the same programs and peripherals as an IBM personal computer.
ibuprofen
na common drug used to reduce pain, inflammation, and fever.
ice
nWater that has frozen and become solid.
ice-age
nA period of time in the past when much of the earth's surface was covered with ice.
ice-blue
adjOf a very pale, cool blue colour, like that of clear ice.
ice-bound
adjCompletely surrounded or blocked by ice, preventing movement.
ice-cold
adjExtremely cold; as cold as ice.
ice-covered
adjCovered with a layer of ice.
ice-cream
nA sweet, frozen food made from cream or milk, sugar, and often fruit or other flavors.
ice-cube
nA small, solid, usually cube-shaped piece of ice made for cooling drinks.
ice-filled
adjCompletely filled with ice.
ice-fishing
nthe activity or practice of fishing through a hole cut in the ice on a frozen body of water.
ice-free
adj(of a body of water or a region) free from ice; not frozen over.
ice-skating
nThe activity or sport of moving on ice wearing ice skates.
iceberg
na very large mass of ice floating in the sea, most of which is below the surface
icebox
na chilled box or cupboard for keeping food cold, especially one containing ice.
icebreaker
nA ship designed to break a channel through ice.
icecap
nA permanent covering of ice over a large area, especially at the North or South Pole.
iced
adjChilled or cooled with ice.
icefall
nA steep part of a glacier that looks like a frozen waterfall.
icehouse
na building where ice is made or stored, especially in the past.
Icelandic
adjOf or relating to Iceland, its people, or their language.
icemaker
nA machine or appliance that automatically produces ice cubes or crushed ice.
iceman
na man who sells or delivers ice.
icepick
na sharp, pointed tool used for breaking or chipping ice
ichor
nIn Greek mythology, the ethereal fluid that flows like blood in the veins of the gods.
ichthyologist
nA scientist who studies fish.
ichthyosaur
nA large extinct marine reptile of the Mesozoic era, having a long, toothed snout, a streamlined body, and four flippers.
icicle
na hanging, tapering piece of ice formed by the freezing of dripping water.
icily
advIn a very cold and unfriendly manner.
iciness
nThe state or quality of being covered with or full of ice; extreme cold.
icing
nA sweet mixture of sugar and liquid, used to cover or fill cakes.
icky
adjUnpleasantly sticky, gooey, or slimy.
icon
nA small picture or symbol on a computer screen that you click on to start a program, open a file, etc.
iconic
adjwidely recognized and well-established as a symbol of a particular period, style, or movement.
iconoclasm
nThe action of attacking or rejecting cherished beliefs, institutions, or established values as being based on error or superstition.
iconoclast
nA person who attacks or criticizes cherished beliefs or established institutions.
iconoclastic
adjCriticizing or attacking cherished beliefs or established institutions.
iconographic
adjRelating to the description or study of visual images, especially in art.
iconographical
adjRelating to or involving the description or interpretation of visual images, especially in art.
iconography
nThe traditional or conventional images or symbols associated with a subject, especially a religious or legendary one.
icosahedral
adjhaving the shape or form of an icosahedron (a polyhedron with twenty faces).
icosahedron
nA solid geometric figure with twenty plane faces.
ICU
nA hospital department or unit that provides intensive care for critically ill patients.
icy
adjvery cold
idea
na thought, suggestion, or concept formed in the mind
ideal
adjsatisfying one's conception of what is perfect; most suitable
idealism
nThe belief that our ideas, or the mind and its contents, are the primary or most perfect reality, and that physical objects are secondary or imperfect representations.
idealist
nA person who is guided more by ideals than by practical considerations.
idealistic
adjHaving high moral or religious principles and trying to live according to them, even if this is not always practical or possible.
idealistically
advIn a manner guided by high ideals, often unrealistically or impractically
idealization
nThe act of thinking of or representing someone or something as perfect or better than in reality.
idealize
vTo regard or represent someone or something as perfect or better than in reality.
idealized
adjRegarded or represented as perfect or better than in reality.
ideally
advIn a perfect or most suitable way.
ideation
nThe process of forming ideas or images in the mind.
ideational
adjRelating to or consisting of ideas or concepts.
identical
adjexactly the same in every detail
identically
advIn exactly the same way; in a manner that is identical.
identifiable
adjAble to be recognized or distinguished from others.
identifiably
advin a way that can be recognized or distinguished from others.
identification
nThe act of recognizing or naming someone or something.
identified
vRecognized or distinguished someone or something
identifier
na sequence of characters used to identify or refer to a unique object, element, or entity, especially in computing or formal systems.
identify
vTo recognize and correctly name someone or something
identifying
v(present participle) Recognizing or being able to name someone or something.
identity
nThe fact of being who or what a person or thing is
identity-based
adjRelating to or dependent on a person's or group's identity, such as their race, gender, nationality, or beliefs.
ideogram
nA written character that symbolizes the idea of a thing without indicating the sounds used to say it (e.g., the numerals 6 or 7, or a Chinese character).
ideograph
nA written character that symbolizes the idea of a thing without indicating the sounds used to say it.
ideographic
adjRelating to or consisting of ideographs; representing ideas directly rather than words or sounds.
ideological
adjRelating to a system of ideas and ideals, especially one which forms the basis of economic or political theory and policy.
ideologically
advIn a way that relates to a system of ideas and ideals, especially concerning economic or political theory and policy.
ideologist
na person who advocates or follows a particular ideology, especially in a rigid or dogmatic way.
ideologue
nA person who follows a particular ideology very strictly and tries to make other people do the same, without considering practical problems.
ideology
nA system of ideas and ideals, especially one which forms the basis of economic or political theory and policy.
idiocy
nExtremely stupid behavior or action; the state of being an idiot.
idiographic
adjRelating to the study or description of individual cases or unique events, rather than general laws or principles.
idiom
nA group of words whose meaning is different from the meanings of the individual words.
idiomatic
adjUsing, containing, or characteristic of expressions that are natural to a native speaker.
idiopathic
adjRelating to or denoting any disease or condition which arises spontaneously or for which the cause is unknown.
idiosyncrasy
na mode of behaviour or way of thought peculiar to an individual.
idiosyncratic
adjHaving unique or peculiar characteristics specific to an individual or thing.
idiosyncratically
advIn a way that is peculiar or distinctive to an individual.
idiot
nA very stupid or foolish person
idiotic
adjExtremely stupid or foolish.
idiotically
advin a very stupid or foolish way
idle
adjNot working or being used; not active or in use.
idled
vPast tense and past participle of 'idle': to spend time doing nothing or very little.
idleness
nThe state of doing no work or being inactive.
idler
na person who avoids work and spends their time doing nothing.
idling
vThe present participle or gerund of 'idle', meaning to spend time doing nothing or to be inactive.
idly
advin a lazy or inactive way; without purpose or effort.
idol
nAn image or representation of a god used as an object of worship.
idolater
nA person who worships an idol or idols.
idolatrize
vto worship as an idol; to venerate or adore excessively or blindly.
idolatrous
adjShowing excessive or blind adoration for someone or something.
idolatry
nthe practice of worshipping statues or pictures as gods
idolization
nThe act of admiring or loving someone or something very much, often to an excessive degree.
idolize
vto admire or love someone very much, often too much
idyll
nA very happy, peaceful, and simple situation or period of time, especially in the countryside, or a piece of art or writing that describes this.
idyllic
adjExtremely happy, peaceful, or picturesque, like a perfect scene in the countryside.
ie
abbreviationthat is; in other words (used to introduce a clarification or explanation)
if
conjUsed to introduce a conditional clause.
if-then
adjRelating to or being a conditional statement or rule of the form "if X, then Y".
iff
conjUsed in logic and computing to introduce a necessary and sufficient condition; a shortened form of "if and only if".
iffy
adjUncertain, doubtful, or not completely reliable.
igloo
nA dome-shaped house or shelter built from blocks of hard snow, traditionally by the Inuit.
ignatian
adjOf or relating to Saint Ignatius of Loyola, the founder of the Society of Jesus (Jesuits), or to his teachings or spiritual exercises.
igneous
adj(of rock) formed from solidified lava or magma.
ignite
vto start burning, or to make something start burning
igniter
na device used to start a fire or ignite a fuel mixture, as in an engine or furnace.
ignition
nThe action of starting to burn or catch fire.