Dictionaries & Thesauruses — Kindle Category Opportunity
Competition snapshot for the Reference best-seller list, ease-of-entry score 20.0/100.
Category metrics
Score
20.0
Median reviews
258
Weak share (top 20)
30%
Median price
$6.99
Median star rating
4.6
Books scanned
50
Worth writing in?
The Dictionaries & Thesauruses list shows real reader demand with room left for newcomers: the median book carries 258 reviews, yet 30% of the top 20 still sit under 100 reviews. 5 top-15 books hold fewer than 100 reviews at $0.99–4.99 — classic self-publishing breakout books. Ease-of-entry score 20.0/100.
Breakout books — top 15, under 100 reviews, $0.99–4.99
Best-seller list on Amazon| # | Title | Star | Reviews | Price |
|---|---|---|---|---|
| 11 | English-Thai Dictionary With Pronunciation and Intelligent Indexing | 4.8 | 19 | $3.99 |
| 13 | Longdo Dict EN-TH: English-Thai Dictionary | 4.0 | 24 | $2.99 |
| 3 | The Highly Selective Dictionary of Golden Adjectives: For the Extraordinarily Literate (Highly Selective Reference) | 4.6 | 60 | $1.99 |
| 1 | The Highly Selective Thesaurus for the Extraordinarily Literate (Highly Selective Reference) | 4.6 | 79 | $1.99 |
| 5 | The Story of Ain't: America, Its Language, and the Most Controversial Dictionary Ever Published | 3.9 | 91 | $1.99 |
High-frequency phrases in this category's titles
Mine all categoriesHigh-frequency phrases mined from the 50 best-seller titles on this category's list. The ease-of-entry score tells you how winnable the category is; these title phrases tell you which words readers search with — use the two layers together. Frequency is a title statistic, not a search-volume estimate.
| Phrase | Titles | Rank-weighted score |
|---|---|---|
| merriam webster | 5 | 168 |
| extraordinarily literate | 3 | 145 |
| highly selective | 3 | 145 |
| highly selective dictionary | 2 | 95 |
| merriam webster dictionary | 2 | 83 |
| english thai dictionary | 2 | 78 |
| words and phrases | 2 | 74 |
| thesaurus fiction writer sourcebook | 2 | 72 |
| dictionary and thesaurus | 2 | 69 |
| english dictionary | 4 | 65 |
| complete expository dictionary | 2 | 55 |
| expository dictionary of old | 2 | 55 |
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More Reference categories
4 subcategories under this category
| Subcategory | Score | Median reviews |
|---|---|---|
| █████ | 80.0 | 1 |
| █████ | 74.0 | 2 |
| █████ | 57.5 | 103 |
| █████ | 56.5 | 125 |
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Research snapshot scanned on Oct 19, 2026. Refreshed periodically — not live tracking.