linearvslinearlyWhich spelling fits?

Quick tell: linear is a adjective, linearly is an adverb, so they fill different roles in a sentence.

Which to use

“linear” is an adjective and “linearly” is an adverb - they look or sound alike but fill different roles in a sentence.

#5,894
“linear” frequency rank
#34,962
“linearly” frequency rank
40856
confusion score

Side-by-Side Comparison

Feature linear linearly
Definition Having the form of a line; straight or roughly straight; following a direct course. In a linear manner.

Letter map: linear vs linearly

Shared letters muted; letters that set linear and linearly apart highlighted. Shared run: 6.

6 ch
linear
8 ch
linearly

Role in the sentence - linear and linearly

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: linear is anadjective and linearlyanadverb. On the page they differ by 2 extra letter(s) - “linear” sits inside “linearly”. Our composite confusion score for this pair is 40856, derived from the frequency rank of both members and their visual similarity.

linear is recorded at frequency rank #5,894, classified as anadj, pronounced /ˈlɪni.ə/. linearly is at rank #34,962, tagged as anadv.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 40856, this pair ranks #263,793 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of linear vs linearly

Shared letters: aeilnr. Private to "linear": -. Private to "linearly": y.

"linear" · 6 letters · shape CVCVVC  ·  "linearly" · 8 letters · shape CVCVVCCV

Known mistypes of this pair

  • linearilnear · lienar · linaer · linearr · linera · linnear · llinear · lniear
  • linearlyilnearly · lienarly · linaerly · linealry · linearlly · linearlyy · linearrly · linearyl

Frequently Asked Questions

Can "linear" and "linearly" be used interchangeably?
No - they are not even the same part of speech. "linear" is an adjective and "linearly" an adverb, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "linear" vs "linearly" - which ranks higher?
"linear" is the more common of the two: it sits at frequency rank #5,894 in our English list, against #34,962 for "linearly". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Done with this confusable. These links stay specific to "linear" and "linearly".

  • Full dictionary entry for "linear" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "linearly" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #263,793 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "linear" and "linearly" also get mixed up with nearby pairs, the highest-scored neighbour is "linear vs linker". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #263,793 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list