sunblock

noun

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

"sunblock" is a 8-letter English headword indexed on PlainSpell.

The verdict

“sunblock” is uncommon English (frequency #59,737 among 6,566 “S” headwords), classed as a noun. The kind of spelling people second-guess.

#59,737
frequency rank, English
6,566
“S” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A sunscreen with a high sun protection factor (SPF).

Corpus desk

Index EN-sunblock · sunblock · English

sunblock · rank #59,737 · 0 variants · 0 confusables

  • FREQ-RARE #59,737
  • LEN-LONG 8 letters
  • VOW-2 2 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-DENSE 6,566
  • PHOTO-FINISH superconductor

Nearest frequency peer: superconductor (+1 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 “sunblock”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

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

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for sunblock
PropertyValue
Headwordsunblock
LanguageEnglish
Part of speechNoun
Letters8
Frequency rank#59,737
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “sunblock” in English

Word frequency stretches from the small set of words we reach for constantly (left) out to the long tail barely used once in a while (right).sunblockfalls in this rarity band:

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

Scale is logarithmic (each tick is 10× rarer). Rare peers in the same band: “superconductor” (#59,738), “subnet” (#59,735), “superheated” (#59,739). Among 6,566 “S” headwords, “sunblock” is #59,737. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

sunblock is uncommon English at frequency #59,737 among 6,566 “S” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "A sunscreen with a high sun protection factor (SPF).".

Zero misspellings are on record for sunblock in our index, typically a sign the spelling maps closely to how the word sounds. No confusable counterpart is on file for this word, since its spelling is unusual enough that it doesn't cluster with a lookalike.

Etymologically, the entry records: From sun + block. The correct English form is sunblock, spelled S-U-N-B-L-O-C-K.

Definition

  1. 1
    A sunscreen with a high sun protection factor (SPF).

Etymology

From sun + block.

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 "sunblock"?
"sunblock" is spelled S-U-N-B-L-O-C-K.
What does "sunblock" mean?
As a noun, "sunblock" means: A sunscreen with a high sun protection factor (SPF).
What is the origin of the word "sunblock"?
From sun + block. 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 "sunblock", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 8 letters (nearest by frequency rank).

Thurgood#59,761Smollett#59,712Timorese#59,765silkworm#59,704

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

Source: FrequencyWords open word-frequency list