acidic
/əˈsɪ.dɪk/
"acidic" is a 6-letter English headword indexed on PlainSpell.
The verdict
“acidic” is a moderately-common English word, ranked #18,473 in English word frequency and used as an adjective.
- #18,473
- frequency rank, English
- 6
- letters
- 8
- tracked misspellings
- 5
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Of or relating to acid; having the character of an acid.
Visual similarity to commonly confused words
How many letter changes separate each confused pair (Levenshtein distance, normalized).
Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).
| Property | Value |
|---|---|
| Headword | acidic |
| Language | English |
| Part of speech | Adjective |
| IPA | /əˈsɪ.dɪk/ |
| Letters | 6 |
| Frequency rank | #18,473 |
| Misspellings tracked | 8 |
| Confusable pairs | 5 |
| Source | Wiktionary (kaikki.org) |
Where “acidic” sits in English frequency
Spelling & Dictionary Insight
The English entry for acidic is 6 letters long, classified as an adjective, and transcribed in the International Phonetic Alphabet as /əˈsɪ.dɪk/. Corpus data places it at rank #18,473 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 3 distinct senses for this headword, so context determines which meaning a reader should apply.
Our generated misspelling index lists 8 likely wrong-spelling variants for acidic, with forms such as "accidic", "acdiic", and "acidci". 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 5 confusable-pair relationships, "acids", "acidity", "acid", and more, where similar look or sound leads writers to substitute one word for another in context.
Etymologically, the entry records: From acid + -ic. Doublet of acidy. The correct English form is acidic, spelled A-C-I-D-I-C.
Definition
- 1Of or relating to acid; having the character of an acid.
- 2Having a pH less than 7, or being sour, or having the strength to neutralize alkalis, or turning a litmus paper red.
- 3Containing a high percentage of silica-bearing minerals.
Etymology
From acid + -ic. Doublet of acidy.
Common misspellings
Also misspelled as: accidic,acdiic,acidci,aciddic,acidicc,aciidc,aicdic,caidic
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of acidic - 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.
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
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Using “acidic”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is A-C-I-D-I-C - every other letter order is a misspelling in standard orthography.
- Say it as /əˈsɪ.dɪk/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Don't mix it up with “acids” - see the side-by-side comparison. acidic vs acids
- 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.