achromatic

/ˌæk.ɹəˈmæt.ɪk/

//ˌæk.ɹəˈmæt.ɪk// adj

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

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

The verdict

“achromatic” is uncommon English (frequency #95,649 among 3,931 “A” headwords), classed as an adjective. The kind of spelling people second-guess.

#95,649
frequency rank, English
3,931
“A” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Free from color; transmitting light without color-related distortion.

Corpus desk

Index EN-achromatic · achromatic · English

achromatic · rank #95,649 · 0 variants · 0 confusables

  • FREQ-RARE #95,649
  • LEN-MEGA 10 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 3,931
  • PHOTO-FINISH aeronautic

Nearest frequency peer: aeronautic (+10 rank slots)

Read with this headword: Spelling guide for this pattern

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Long-tail ranks near “achromatic”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “achromatic” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for achromatic
PropertyValue
Headwordachromatic
LanguageEnglish
Part of speechAdjective
IPA/ˌæk.ɹəˈmæt.ɪk/
Letters10
Frequency rank#95,649
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “achromatic” in English

This scale runs from the tiny cluster of words that carry ordinary speech (left) to the long tail of words almost nobody reaches for (right).achromaticfalls in this rarity band:

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

Ticks step logarithmically, so each one marks a roughly tenfold drop in how often the word turns up. Rare peers in the same band: “aeronautic” (#95,659), “élan” (#95,633), “ZOMG” (#95,632). Among 3,931 “A” headwords, “achromatic” is #95,649. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

achromatic is uncommon English at frequency #95,649 among 3,931 “A” headwords, classed as anadjective, transcribed /ˌæk.ɹəˈmæt.ɪk/. Rarity is why readers land here mid-draft. 4 senses are on record.

Our edit-distance generator produced no likely misspellings for achromatic, which points to an orthography that plays by predictable English rules. This headword has no recorded confusable partner, suggesting its spelling stands apart enough that readers rarely confuse it with something else.

Etymologically, the entry records: From Ancient Greek ἀχρωμάτιστος (akhrōmátistos, “uncolored”), from ἀ- (a-, “not”) + χρῶμα (khrôma, “color”), equivalent to a- + chromatic; compare French achromatique. The correct English form is achromatic, spelled A-C-H-R-O-M-A-T-I-C.

Definition

  1. 1
    Free from color; transmitting light without color-related distortion.
  2. 2
    Containing components such as achromatic lenses and prisms, designed to prevent color-related distortion.
  3. 3
    Uncolored; not absorbing color from a fluid.
  4. 4
    Having only the diatonic notes of the scale; not modified by accidentals.

Etymology

From Ancient Greek ἀχρωμάτιστος (akhrōmátistos, “uncolored”), from ἀ- (a-, “not”) + χρῶμα (khrôma, “color”), equivalent to a- + chromatic; compare French achromatique.

Synonyms

achromaticcolorlesscolourlesshueless

Antonyms

coloredcolouredcolorfulcolourfuldyedmotleymulticoloredmulticolouredparticoloredparticolouredpolychromaticpolychromevariegated

This word in other languages

acromático(Español)

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 "achromatic"?
"achromatic" is spelled A-C-H-R-O-M-A-T-I-C. The IPA pronunciation is /ˌæk.ɹəˈmæt.ɪk/.
What does "achromatic" mean?
As an adjective, "achromatic" means: Free from color; transmitting light without color-related distortion.
How do you pronounce "achromatic"?
The IPA (International Phonetic Alphabet) transcription for "achromatic" is /ˌæk.ɹəˈmæt.ɪk/. 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 "achromatic"?
From Ancient Greek ἀχρωμάτιστος (akhrōmátistos, “uncolored”), from ἀ- (a-, “not”) + χρῶμα (khrôma, “color”), equivalent to a- + chromatic; compare French achromatique. 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.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "achromatic", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 10 letters (nearest by frequency rank).

aeronautic#95,659Albrighton#95,671Algonquian#95,673webhosting#95,602

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

Source: FrequencyWords open word-frequency list