ideal
/aɪˈdi(ə)l/adjective, noun
ideal is spelled I-D-E-A-L: 5 letters and 2 syllables. It appears 28 times per million words in written English, the 3,364th most frequent word form (wordfreq, 2021 data). People search “idea vs ideal” about 1,000 times a month (Google, United States). As an adjective, ideal means “Pertaining to ideas, or to a given idea” (English Wiktionary, September 2026).
How many letters and syllables are in ideal?
| Letters | 5: I-D-E-A-L |
|---|---|
| Syllables | 2 (from its American pronunciation) |
| In writing | 28 times per million words; the 3,364th most frequent word form |
| Wrong spellings searched | none measured in search |
| Pairs people search | |
| Rhymes with | |
| Same letters |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation and the CMU Pronouncing Dictionary; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media); Bing searches in the United States: the average month from September 2025 to August 2026 (Microsoft Advertising keyword data through DataForSEO, read September 30, 2026); rhymes and same-letter words are computed by PlainSpell from its own word list.
How common is ideal?
Ideal appears 28 times per million words in written English, the 3,364th most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How do you pronounce ideal?
- UK /aɪˈdɪəl/
- US /aɪˈdi(ə)l/
Ideal has 2 syllables (counted from its American pronunciation in the CMU Pronouncing Dictionary).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: En-us-ideal.ogg, Wikimedia Commons (author and licence on each file's page).
Words people confuse with ideal
Word pairs people search, with the monthly searches for “a vs b” (G: Google, B: Bing, United States).
Sources: Google and Bing searches (September 2025 to August 2026, through DataForSEO); English Wiktionary (homophones, alternative spellings).
What rhymes with ideal?
The 12 most written words on PlainSpell end in the same sounds as ideal from its last stressed vowel (/il/):
Spelled with the same letters in another order: delia.
Computed by PlainSpell from the pronunciations in the English Wiktionary (dump of September 2, 2026): a rhyme shares every sound from the last stressed vowel to the end; ordered by written frequency (wordfreq 3.1).
Forms of ideal
- more ideal comparative
- most ideal superlative
- ideals plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does ideal mean?
The meanings the English Wiktionary records, quoted as written there (source below).
adjective
- 1
Pertaining to ideas, or to a given idea.
- 2
Existing only in the mind; conceptual, imaginary.
- 3
Optimal; being the best possibility.
- 4
Perfect, flawless, having no defects.
- 5
Teaching or relating to the doctrine of idealism.
the ideal theory or philosophy
- 6
Not actually present, but considered as present when limits at infinity are included.
ideal point
noun
- 1
A perfect standard of beauty, intellect etc., or a standard of excellence to aim at.
- 2
A two-sided ideal; a subset of a ring which is closed under both left and right multiplication by elements of the ring.
Let #92;mathbb#123;Z#125; be the ring of integers and let 2#92;mathbb#123;Z#125; be its ideal of even integers. Then the quotient ring #92;mathbb#123;Z#125;#47;2#92;mathbb#123;Z#125; is a Boolean ring.
- 3
A non-empty lower set (of a partially ordered set) which is closed under binary suprema (a.k.a. joins).
- 4
A collection of sets, considered small or negligible, such that every subset of each member and the union of any two members are also members of the collection.
Formally, an ideal I of a given set X is a nonempty subset of the powerset #92;mathcal#123;P#125;(X) such that: (1)#92;#92;emptyset#92;inI, (2)#92;A#92;inI#92;andB#92;subseteqA#92;impliesB#92;inI and (3)#92;A,B#92;inI#92;impliesA#92;cupB#92
- 5
A Lie subalgebra (subspace that is closed under the Lie bracket) 𝖍 of a given Lie algebra 𝖌 such that the Lie bracket [𝖌,𝖍] is a subset of 𝖍.
- 6
A subsemigroup with the property that if any semigroup element outside of it is added to any one of its members, the result must lie outside of it.
The set of natural numbers with multiplication as the monoid operation (instead of addition) has multiplicative ideals, such as, for example, the set {1, 3, 9, 27, 81, ...}. If any member of it is multiplied by a number which is not a power
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Ideal in Spanish, French, German and Portuguese
| Language | Words |
|---|---|
| French | idéal , parfait |
| German | ideal, bestmöglich, optimal , vollendet, einwandfrei , Ideal |
| Portuguese | ideal |
| Spanish | ideal, idóneo , perfecto , canon |
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.
Where does ideal come from?
From French idéal, from Late Latin ideālis (“existing in idea”), by surface analysis, idea + -al, from Latin idea (“idea”); see idea. In mathematics, the noun ring theory sense was first introduced by German mathematician Richard Dedekind in his 1871 edition of a text on number theory. The concept was quickly expanded to ring theory and later generalised to order theory. The set theory and Lie theory senses can be regarded as applications of the order theory sense.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).