solid as a rock
"solid-as-a-rock" is a 12-letter English headword indexed on PlainSpell.
The verdict
“solid as a rock” is uncommon English (outside the top frequency list), classed as an adjective. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 15
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Extremely thick and heavy, so as to make it impossible to move.
| Property | Value |
|---|---|
| Headword | solid as a rock |
| Language | English |
| Part of speech | Adjective |
| Letters | 15 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “solid as a rock” sits in English frequency
Rare enough to double-check
solid as a rock is uncommon English outside the top frequency list, classed as anadjective. Rarity is why readers land here mid-draft. 2 senses are on record.
solid as a rock doesn't appear in our generated misspelling index, a straightforward case of a spelling with little room for common typos. No confusable counterpart is on file for this word, since no other headword is close enough in sound or shape to pair with it.
No explicit etymology string is stored for this entry, leaving phoneme-to-grapheme mapping as the best guide to its spelling rather than a borrowing history. The correct English form is solid as a rock, spelled S-O-L-I-D- -A-S- -A- -R-O-C-K.
Definition
- 1Extremely thick and heavy, so as to make it impossible to move.
- 2Very reliable and dependable
Synonyms
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Using “solid as a rock”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is S-O-L-I-D- -A-S- -A- -R-O-C-K - every other letter order is a misspelling in standard orthography.
- 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.