English Words: I

17,902 words · Page 4 of 359

IDSnoun

Initialism of ideographic description sequence.

idyllnoun

Any poem or short written piece composed in the style of Theocritus's short pastoral poems, the Idylls.

idyllicadj

Of or pertaining to idylls.

IEAname

Initialism of International Energy Agency: an autonomous intergovernmental organization.

IEDnoun

Initialism of Intelligent Electronic Device, a sensor, actuator, or PLC used as part of a SCADA system.

IEEEname

Initialism of Institute of Electrical and Electronics Engineers.

IELTSname

Initialism of International English Language Testing System.

IEPnoun

Initialism of isoelectric point.

iesnoun

plural of i, the name of the letter I.

ifconj

Supposing that, assuming that, in the circumstances that; used to introduce a condition that may be (or prove to be) either true or false.

IFCname

Initialism of International Finance Corporation.

iffconj

Abbreviation of if and only if.

iffyadj

Of dubious authenticity, legitimacy or legality.

IFPname

Initialism of Inkatha Freedom Party.

IFRnoun

Initialism of instrument flight rules, a set of rules for a pilot flying on instruments, primarily as a means of navigating through inclement weather.

ifritnoun

A kind of djinn mentioned in the Qur'an.

ifsnoun

plural of if

IFSCname

Initialism of International Financial Services Centre: a central business district and special economic zone in Dublin, Ireland.

iftarnoun

The evening meal that breaks each day's fast during Ramadan, traditionally begins with dates and water.

Iftikharname

A surname from Arabic.

IGnoun

Initialism of inspector general.

Iganame

An ancient province of Japan, in modern Mie Prefecture.

Igboname

A member of a people of southeast Nigeria.

IGEadj

Initialism of in-ground-effect

iggverb

To ignore deliberately.

iggyverb

To ignore (a user on a chat system, etc.).

ightnoun

possession

Iglesiasname

A commune of South Sardinia, Sardinia, Italy.

igloonoun

A dome-shaped Inuit shelter, constructed of blocks cut from snow.

IGMnoun

Abbreviation of InterGalactic Medium.

Ignacioname

A surname from Spanish.

Ignatiusname

A male given name from Latin; of mostly Roman Catholic or Eastern Orthodox usage in English.

igneousadj

Pertaining to or having the nature of fire; containing fire; resembling fire.

igniteverb

to set fire to (something), to light (something)

igniternoun

Any device that is used to ignite something, especially a fuel mixture, or a charge of explosive

ignitionnoun

The act of igniting.

ignobleadj

Not noble; plebeian; common.

ignominiousadj

Marked by great disgrace, dishonour, humiliation, or shame; disgraceful, shameful.

ignominynoun

Great dishonor, shame, or humiliation.

ignoramusnoun

A totally ignorant person—unknowledgeable, uneducated, or uninformed; a fool.

ignorancenoun

The condition of being uninformed or uneducated; lack of knowledge or information.

ignorantadj

Unknowledgeable or uneducated; characterized by ignorance.

ignorantlyadv

In an ignorant manner.

ignoreverb

To deliberately not listen or pay attention to.

ignoredverb

simple past and past participle of ignore

ignoringnoun

The act by which something is ignored.

IGOnoun

Initialism of intergovernmental organization /international governmental organization.

Igorname

A male given name from Russian.

iguananoun

A green iguana (Iguana iguana), a large tropical American lizard often kept as a pet.

IHnoun

Initialism of industrial hygiene.

Spelling & Dictionary Insight

The English alphabetical index for the letter I contains 17,902 headwords drawn from our Wiktionary-derived dictionary table. At 50 entries per page the browse splits into 359 pages, and you are currently viewing page 4. Every row above is a dictionary-backed entry with a canonical slug, and each links through to a full definition page with pronunciation, senses, etymology, and related-word data where available.

On this page 50 of 50 entries carry a part-of-speech tag and 50 carry at least one stored definition. Coverage varies across letters because Wiktionary volunteers build entries at different speeds for different parts of the alphabet, letters with common starting sounds (S, C, T, P) usually have the densest coverage, while less frequent starters (X, Q, Z) tend to have shorter but more specialised lists. PlainSpell surfaces whatever data is present and links back to the source when a definition is not yet recorded.

For readers using this index as a spelling reference, the guarantee is that every form you see on the list is a documented English headword, not a guess, not a derived inflection lacking a lemma row. If a word you expected to find is absent from the "I" list, it usually means the form exists only as an inflection of another lemma (e.g. a past participle stored under the infinitive) or the entry has not yet been imported from Wiktionary. Use the search bar or the misspelling lookup to resolve these cases.