insidioso

[ĩnsiˈð̞joso]

/[ĩnsiˈð̞joso]/ adj

By · According to Wiktionary data (CC BY-SA) ·

The verdict

“insidioso” is uncommon Spanish (frequency #75,571 among 22,782 “I” headwords), classed as an adjective. The kind of spelling people second-guess.

#75,571
frequency rank, Spanish
22,782
“I” headwords

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Dícese del que tiende a armar asechanzas.

Key facts for insidioso
PropertyValue
Headwordinsidioso
LanguageSpanish
Part of speechAdjective
IPA[ĩnsiˈð̞joso]
Letters9
Frequency rank#75,571
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “insidioso” sits in Spanish frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). insidioso lands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Rare enough to double-check

insidioso is uncommon Spanish at frequency #75,571 among 22,782 “I” headwords, classed as anadjective, transcribed [ĩnsiˈð̞joso]. Rarity is why readers land here mid-draft. 3 senses are on record.

insidioso has no tracked misspelling variants, since its letter pattern doesn't lend itself to common typo substitutions. No close-neighbour confusable shows up for this headword in our dataset, since nothing in our dataset looks or sounds close enough to cause mix-ups.

This entry's etymology isn't recorded, so its spelling is easiest explained by how it's pronounced rather than where it came from. The correct Spanish form is insidioso, spelled I-N-S-I-D-I-O-S-O.

Definition

  1. 1
    Dícese del que tiende a armar asechanzas.
  2. 2
    De apariencia inocente, pero malvado; referido a la apariencia de inocencia, inocuidad, pero cuyos fines son perversos.
  3. 3
    Que produce daño de manera sigilosa, a veces gradual.

This word in other languages

scheming(English)insidieux(Français)hinterhältig(Deutsch)insidioso(Português)

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 Spanish corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "insidioso"?
"insidioso" is spelled I-N-S-I-D-I-O-S-O. The IPA pronunciation is [ĩnsiˈð̞joso].
What does "insidioso" mean?
As an adjective, "insidioso" means: Dícese del que tiende a armar asechanzas.
How do you pronounce "insidioso"?
The IPA (International Phonetic Alphabet) transcription for "insidioso" is [ĩnsiˈð̞joso]. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "insidioso" come from?
"insidioso" is a Spanish word. PlainSpell's reference spans five languages -- English, Spanish, Portuguese, French, and German -- with definitions, pronunciations, and spelling data for each.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Using “insidioso”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct Spanish spelling is I-N-S-I-D-I-O-S-O - every other letter order is a misspelling in standard orthography.
  • Say it as [ĩnsiˈð̞joso] (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Browse more Spanish words and confusable pairs in the same reference. Spanish words

Other uncommon Spanish words near this rank

Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list