baseline
/ˈbeɪslaɪn/
"baseline" is a 8-letter English headword indexed on PlainSpell.
The verdict
“baseline” is a moderately-common English word, ranked #11,167 in English word frequency and used as a noun.
- #11,167
- frequency rank, English
- 8
- letters
- 11
- tracked misspellings
- 1
- confusable pair
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A line that is a base for measurement or for construction.
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 | baseline |
| Language | English |
| Part of speech | Noun |
| IPA | /ˈbeɪslaɪn/ |
| Letters | 8 |
| Frequency rank | #11,167 |
| Misspellings tracked | 11 |
| Confusable pairs | 1 |
| Source | Wiktionary (kaikki.org) |
Where “baseline” sits in English frequency
Spelling & Dictionary Insight
The English entry for baseline is 8 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /ˈbeɪslaɪn/. Corpus data places it at rank #11,167 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 5 distinct senses for this headword, so context determines which meaning a reader should apply.
Our generated misspelling index lists 11 likely wrong-spelling variants for baseline, with forms such as "abseline", "baesline", and "baseilne". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. It also participates in 1 confusable-pair relationship, "backline", since the words sound or look close enough that writers reach for the wrong one mid-sentence.
Etymologically, the entry records: From base + line. The correct English form is baseline, spelled B-A-S-E-L-I-N-E.
Definition
- 1A line that is a base for measurement or for construction.
- 2A datum used as the basis for calculation or for comparison.
- 3A line used as the basis for the alignment of glyphs.
- 4The line at the farthest ends of the court indicating the boundary of the area of play.
- 5A configuration of software, hardware, or a process that is established and documented as a point of reference.
Etymology
From base + line.
This word in other languages
Common misspellings
Also misspelled as: abseline,baesline,baseilne,baselien,baselinne,baselline,baselnie,basleine,basseline,bbaseline,bsaeline
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of baseline - counted as single-character edits (an insertion, a deletion, or a substituted letter). The larger the bar, the easier the typo is to spot; one-edit slips are the ones that sneak past readers.
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 “baseline”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is B-A-S-E-L-I-N-E - every other letter order is a misspelling in standard orthography.
- Say it as /ˈbeɪslaɪn/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Don't mix it up with “backline” - see the side-by-side comparison. baseline vs backline
- 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.