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The library of the mountain

Every word in the bank, three ways in

This is the whole word bank Synonym Stack plays from: 4,700+ pairs across 4,000+ words, built from WordNet 2025 and then audited by hand rather than generated and shipped.

4,000+ word pages · 31 themes · 5 tiers · WordNet 2025

What is in hereCounted from the bank at build time
Audited pairs4,700+Every entry read by a human, one at a time
Words4,000+One page each, some carrying two senses
Reason lines3,000+Entries that explain why the nearest wrong answer is wrong
Themes31Shelves, from qualities down to weather
Difficulty tiers5Foothills at the bottom, Summit at the top

Every figure in this band is computed from the word bank when the site is built and then floored to the nearest hundred, because the bank keeps growing. None of them are typed into the copy.

One from each tierChosen for spread, not for flattery
sulkverbmopeto be silently bad-tempered and resentful, showing displeasure through silenceFoothillsHas a reason linequarrynounpreyan animal that is being hunted or pursuedTreelineHas a reason linerefillverbreplenishfill something that had previously been emptiedRidgelineHas a reason linefaxverbfacsimilesend something via a facsimile machineHigh CampHas a reason linealcoholnounintoxicanta liquor or brew containing alcohol as the active agentSummitHas a reason line
Browse by theme31 shelves

Shelves, in the order they fill up

A theme is the part of the world a word is about. Qualities is by far the biggest shelf, because adjectives are where English keeps most of its near misses.

QualitiesWhat something is like679 wordsActionsThings done, named as nouns332 wordsThinking and knowingJudgement, memory, belief290 wordsCommunicationSaying, writing, signalling279 wordsStates and conditionsHow something stands285 wordsContact and joiningTouching, holding, fixing169 wordsChangeBecoming something else142 wordsPeople and rolesWho someone is176 wordsObjectsThings you can hold136 wordsEmotionsWhat something feels like128 wordsEventsThings that happen127 wordsSocial lifeActing with other people125 wordsGroups and collectionsMany treated as one104 wordsThe bodyBodily verbs and parts76 wordsNatureLand, weather, living things101 wordsMovementGoing from here to there78 wordsFood and drinkEating, drinking, abstaining71 wordsPlacesWhere something is74 wordsGiving and transferringHanding something over96 wordsTimeWhen, and for how long72 wordsMaking and creatingBringing something into being69 wordsQuantityHow much of it there is82 wordsCompetitionBeating, or trying to61 wordsPerceptionSeeing, hearing, noticing60 wordsMoneySums, aid and exchange50 wordsShapesForm and outline56 wordsRelationsHow two things stand to each other28 wordsProcessesSomething unfolding over time34 wordsMaterialsWhat something is made of55 wordsAnimalsCreatures and their traits28 wordsWeatherFire, frost and blight26 words
Browse by difficultyFoothills to Summit

Five tiers, one ascent

The bank scores every pair from one to five. The daily stack climbs all five in order, and the tier pages let you read a single band end to end.

1Foothillseveryday wordsWords you already use, paired with a synonym you probably also know.913 words2Treelineone step upFamiliar words, with a synonym that sits slightly outside daily speech.1,244 words3Ridgelinesolid vocabularyThe middle of the bank, where the near misses start to bite.1,275 words4High CamptestingWords that turn up in serious reading rather than in conversation.804 words5Summitrare and formalThe rare register: literary, legal and technical English.238 words
Every word, A to Z4,000+ pages

The full index

Nothing hidden and nothing paginated. If a word is in the app, its page is in this list.

A262

C400

D283

I181

P306

R251

S513

Compiled by Fable, Editor, Synonym Stack

A library you can read, and a mountain you can climb

The pages here are the reference. The app is the practice: a five rung stack every day, a stage by stage ascent of Mount Lexicon, and a journal of every word you have met.

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