insider
/ɪnˈsaɪdɚ/noun
insider is spelled I-N-S-I-D-E-R: 7 letters and 3 syllables. It appears 5.9 times per million words in written English, the 10,028th most frequent word form (wordfreq, 2021 data). As a noun, insider means “A person who has special knowledge about the inner workings of a group, organization, or institution” (English Wiktionary, September 2026). The plural of insider is insiders.
How many letters and syllables are in insider?
| Letters | 7: I-N-S-I-D-E-R |
|---|---|
| Syllables | 3 (from its American pronunciation) |
| In writing | 5.9 times per million words; the 10,028th most frequent word form |
| Wrong spellings searched | none measured in search |
| Rhymes with |
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); rhymes and same-letter words are computed by PlainSpell from its own word list.
How common is insider?
Insider appears 5.9 times per million words in written English, the 10,028th 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 insider?
- US /ɪnˈsaɪdɚ/
- US /ˈɪnsaɪdɚ/
Insider has 3 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: LL-Q1860_(eng)-Vealhurl-insider.wav, Wikimedia Commons (author and licence on each file's page).
What rhymes with insider?
9 words on PlainSpell end in the same sounds as insider from its last stressed vowel (/aɪdəɹ/):
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 insider
- insiders plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does insider mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
A person who has special knowledge about the inner workings of a group, organization, or institution.
Near-synonyms: initiate, old hand, habitué
- 2
A person who is within an enclosed space.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Insider in Spanish, French, German and Portuguese
In the sense person who has special knowledge:
| Language | Words |
|---|---|
| French | initié |
| German | Insider, Eingeweihter, Eingeweihte |
| Spanish | insider (insáider), adentrino, adentreño, dentreño |
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 insider come from?
From inside + -er.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).