autonomous

/ɔːˈtɒnəməs/

//ɔːˈtɒnəməs// adj

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

"autonomous" is a 10-letter English headword indexed on PlainSpell.

The verdict

“autonomous” is a regularly-used English word, ranked #8,892 in English word frequency and used as an adjective.

#8,892
frequency rank, English
10
letters
13
tracked misspellings
1
confusable pair

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Self-governing. Intelligent, sentient, self-aware, thinking, feeling, governing independently.

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

autonomous vs autonomously
83% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for autonomous
PropertyValue
Headwordautonomous
LanguageEnglish
Part of speechAdjective
IPA/ɔːˈtɒnəməs/
Letters10
Frequency rank#8,892
Misspellings tracked13
Confusable pairs1
SourceWiktionary (kaikki.org)

Where “autonomous” sits in English 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). autonomous lands here:

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

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

Spelling & Dictionary Insight

The English entry for autonomous is 10 letters long, classified as an adjective, and transcribed in the International Phonetic Alphabet as /ɔːˈtɒnəməs/. Corpus data places it at rank #8,892 in overall English word frequency, indicating it appears regularly in written and spoken text. Wiktionary records 3 distinct senses for this headword, so context determines which meaning a reader should apply.

Our generated misspelling index lists 13 likely wrong-spelling variants for autonomous, with forms such as "atuonomous", "auotnomous", and "autnoomous". Every one of these variants traces to a single-character edit -- an added or dropped letter, a swapped consonant, or a vowel swap -- the kind of slip a spell-checker is built to catch. It also participates in 1 confusable-pair relationship, "autonomously", a pairing that trips writers up because the two words share enough sound or shape to blur together.

Etymologically, the entry records: From autonomy + -ous. The correct English form is autonomous, spelled A-U-T-O-N-O-M-O-U-S.

Definition

  1. 1
    Self-governing. Intelligent, sentient, self-aware, thinking, feeling, governing independently.
  2. 2
    Acting on one's own or independently; of a child, acting without being governed by parental or guardian rules.
  3. 3
    Used with no subject, indicating an unknown or unspecified agent; used in similar situations as the passive in English (the difference being that the theme in the English passive construction is the subject, while in the Celtic autonomous construction the theme is the object and there is no subject).

Etymology

From autonomy + -ous.

Antonyms

heteronomous

This word in other languages

autónomo(Español)autonome(Français)autonom(Deutsch)autónomo(Português)

Common misspellings

Also misspelled as: atuonomous,auotnomous,autnoomous,autonmoous,autonnomous,autonommous,autonomosu,autonomouss,autonomuos,autonoomus,autoonmous,auttonomous,uatonomous

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of autonomous - expressed in single-character edits (insert, delete, or swap one letter). Bigger bars stand out at a glance; a one-edit slip is the hardest to catch.

atuonomous2auotnomous2autnoomous2autonmoous2autonnomous1autonommous1autonomosu2autonomouss1
Edit distance from "autonomous"

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 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "autonomous"?
"autonomous" is spelled A-U-T-O-N-O-M-O-U-S. The IPA pronunciation is /ɔːˈtɒnəməs/.
What does "autonomous" mean?
As an adjective, "autonomous" means: Self-governing. Intelligent, sentient, self-aware, thinking, feeling, governing independently.
What words are commonly confused with "autonomous"?
"autonomous" is commonly confused with "autonomously". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "autonomous"?
The IPA (International Phonetic Alphabet) transcription for "autonomous" is /ɔːˈtɒnəməs/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "autonomous"?
From autonomy + -ous. See the full etymology section above for more details.
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 “autonomous”

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

  • The one correct English spelling is A-U-T-O-N-O-M-O-U-S - every other letter order is a misspelling in standard orthography.
  • Say it as /ɔːˈtɒnəməs/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Don't mix it up with “autonomously” - see the side-by-side comparison. autonomous vs autonomously
  • Browse more English words and confusable pairs in the same reference. English words
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 FrequencyWords open word-frequency list