English words starting with I

The act of going into a place or situation where you are not wanted or not supposed to be.

tending to intrude, especially where one is not welcome or invited.

the quality of disturbing or interrupting someone or something in an unwanted way

to insert a tube into a hollow organ or passage of the body, especially the trachea, for medical purposes.

The action or process of inserting a tube into a hollow organ or passageway in the body, especially into the trachea to maintain an open airway.

To know or understand something immediately through feeling rather than conscious reasoning.

the ability to understand or know something immediately, without conscious reasoning or proof.

Understood or known immediately without conscious reasoning.

in a way that is based on feelings rather than facts or proof

The action or process of swelling up or becoming swollen.

A member of a group of Indigenous peoples inhabiting the Arctic regions of Greenland, Canada, and Alaska.

a polysaccharide found in the roots and tubers of various plants, used as a dietary fiber and in medical tests for kidney function.

to cover an area of land with a large amount of water; to flood.

flooded with water; overwhelmed.

a large amount of water that covers an area that is usually dry; a flood.

to cause someone to become accustomed to something, especially something unpleasant

accustomed to accepting something undesirable, especially because it has happened repeatedly over a long period.

To enter a country, town, or area using military force in order to take control of it.

entered (a country, region, or space) by force with armed troops, especially to conquer or occupy it.

A person or group that enters a country, region, or area by force with the intention of taking control of it.

(of an army or armed force) entering a country or region by force with the intent to conquer or occupy it.

not legally or officially acceptable

to make something no longer legally or officially acceptable

The act of making something officially or legally invalid.

The state of being officially or legally unacceptable.

extremely useful; indispensable

never changing; constant

In every case or on every occasion; always.

the property of remaining unchanged under a set of transformations or conditions.

never changing

an occasion when an army or country uses force to enter and take control of another country

(of medical procedures) involving the introduction of instruments or other objects into the body or a body cavity.

The quality of being invasive, especially of a medical procedure or an organism, in tending to spread undesirably into surrounding areas.

insulting, abusive, or highly critical language.

To speak or write about something with great hostility or criticism.

to persuade someone to do something in a clever or deceptive way.

to create or design something that has not existed before; to be the originator of a new device, process, or concept.

Created or designed something that did not exist before.

The present participle or gerund of the verb 'invent', meaning to create or design something that has not existed before.

Something, such as a device or process, that has been created for the first time through the use of imagination or ingenious thinking.

having the ability to create or design new things or to think originally.

in a way that shows the ability to create or design new things or to think originally

the ability to think of new and original ideas or methods; creativity.

a person who creates or designs something that did not exist before, especially a new device, process, or method.

a complete list of items such as property, goods in stock, or the contents of a building.

opposite in nature, order, or effect

in such a way that one amount increases as another decreases, or one thing happens as the opposite of another

The action of inverting something or the state of being inverted.

to turn something upside down or put it in the opposite order, position, or arrangement.

an animal that does not have a backbone or spinal column.

Turned upside down or inside out; reversed in position, order, or relationship.

A device that converts direct current (DC) to alternating current (AC).

(gerund or present participle) Turning something upside down or inside out.

To commit money or capital to a financial venture with the expectation of achieving a profit.

having put money into financial schemes, shares, or property with the expectation of achieving a profit.

To try to find out the facts about something, such as a crime, accident, or scientific problem, in order to learn how it happened or who did it.

Past tense and past participle of investigate: to examine a crime, problem, statement, etc. carefully, especially to discover the truth.

Carrying out a systematic or formal inquiry to discover and examine the facts of something.

the act or process of examining a crime, problem, statement, etc. carefully, especially to discover the truth

Relating to or involving scientific or clinical investigation, especially of a new drug or treatment.

Relating to or involving investigation, especially by an official body.

a person whose job is to examine a crime, problem, statement, etc. in order to discover the truth.

Relating to or involving investigation.

The act of committing money or capital to an endeavor with the expectation of obtaining an additional income or profit.

The formal investing of a person with an office, rank, or power, often in a ceremony.

The action or process of investing money for profit or material result.

The business activity of a large financial institution that deals with raising capital for companies, governments, and other entities, and providing advisory services on mergers and acquisitions and other major financial transactions.

Of a bond or other security: considered to have a low risk of default and thus a high credit rating.

a person or organization that puts money into financial schemes, property, or a business with the expectation of achieving a profit.

(of a company or utility) owned by shareholders who have invested capital, as opposed to being publicly or cooperatively owned.

(of a person) having a particular habit, activity, or interest that is long-established and unlikely to change

(of an action or situation) likely to cause resentment or anger in others because it is seen as unfair.

in a way that is likely to arouse resentment or anger in others because it is unfair or seems unjust.

To watch people who are taking an examination to make sure that they have no extra help and that they do not cheat.

to give life, energy, or strength to someone or something; to make someone feel more lively and healthy.

Filled with energy, strength, or life; feeling refreshed and revitalized.

Making one feel strong, healthy, and full of energy.

the quality or state of being impossible to defeat or overcome

impossible to defeat or overcome; unconquerable.

the quality or state of being safe from harm, destruction, or violation.

That must be respected and not attacked or destroyed.

The state or fact of being impossible to see.

impossible to see; not visible to the eye.

in a way that cannot be seen

A spoken or written request to go somewhere or do something.

Restricted to people who have been invited; not open to the general public.

relating to or having the nature of an invitation

To ask someone politely or formally to come to an event or place.

Having been asked to attend or participate in an event, gathering, or activity.

a person who has been invited to go somewhere or to do something

having an attractive or appealing quality that encourages you to accept or become involved

in a way that makes something seem attractive or pleasant

The act of calling upon a deity, spirit, etc., for help, inspiration, or support.

a list of goods sent or services provided, with a statement of the sum due for these; a bill.

to cite or appeal to (someone or something) as an authority for an action or in support of an argument.

in a way that is not done by choice or willingly

done without conscious control or intention

The process of becoming involved in something, especially when it is complicated or difficult to escape.

to include or affect someone or something as a necessary part or result

Complicated and difficult to comprehend

the act or process of taking part in an activity or event

the quality or state of being impossible to harm, damage, or defeat

impossible to harm or damage

Directed or moving towards the inside

interested only in your own country, group, or situation and not willing to accept new or different ideas

in one's own mind or feelings; privately

the quality of being directed towards or concerned with one's own inner life, thoughts, and feelings; introspection.

towards the inside or centre of something

A compound of iodine with another element or group, especially a salt of the anion I⁻.

A dark grey chemical element that is used in medicine and photography, and is found in small amounts in sea water.

(of salt) treated with iodine or an iodide compound to prevent iodine deficiency.

An atom or molecule that has gained or lost one or more electrons, resulting in a net positive or negative electrical charge.

Of or relating to Ionia, the ancient region on the western coast of Asia Minor, or its inhabitants, culture, or dialect.

Relating to, composed of, or using ions.

the process of forming ions or the state of being ionized.

to convert (an atom, molecule, or substance) into an ion or ions, typically by removing one or more electrons.

(of a substance) converted into ions, or having been made into ions.

Causing the formation of ions by adding or removing charged particles (electrons).

the layer of the earth's atmosphere which contains a high concentration of ions and free electrons and is able to reflect radio waves. it lies above the mesosphere and extends from about 80 to 1000 km above the earth's surface.

an extremely small amount