blastervsbolsterWhich spelling fits?

Which to use

“blaster” and “bolster” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#26,015
“blaster” frequency rank
#19,274
“bolster” frequency rank
45289
confusion score

Side-by-Side Comparison

Feature blaster bolster
Definition Anything that, or anyone who blasts. A large cushion or pillow, usually cylindrical in shape.

Where the eye mixes blaster and bolster

Muted = shared; highlighted = the visual trap. They share 6 letters in sequence. blaster (CCVCCVC) and bolster (CVCCCVC) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

7 ch
blaster
7 ch
bolster

Visual trap between blaster and bolster

A purely visual mix-up. blaster (/ˈblɑːs.tə/) and bolster (/ˈbɒlstə/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 45289, derived from the frequency rank of both members and their visual similarity.

blaster is recorded at frequency rank #26,015, classified as anoun, pronounced /ˈblɑːs.tə/. bolster is at rank #19,274, tagged as anoun, pronounced /ˈbɒlstə/.

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 45289, this pair ranks #222,625 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of blaster vs bolster

Shared letters: belrst. Private to "blaster": a. Private to "bolster": o.

"blaster" · 7 letters · shape CCVCCVC  ·  "bolster" · 7 letters · shape CVCCCVC

Known mistypes of this pair

  • blaster ← balster · bblaster · blasetr · blasster · blasterr · blastre · blastter · blatser
  • bolster ← bbolster · bloster · bollster · bolsetr · bolsster · bolsterr · bolstre · bolstter

Frequently Asked Questions

Can "blaster" and "bolster" be used interchangeably?
No. They are said differently (/ˈblɑːs.tə/ versus /ˈbɒlstə/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "blaster" or "bolster"?
"bolster" is the more common of the two: it sits at frequency rank #19,274 in our English list, against #26,015 for "blaster". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "blaster" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "bolster" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #222,625 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "blaster" and "bolster" also get mixed up with nearby pairs, the highest-scored neighbour is "blaster vs bluster". 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 #222,625 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