Thinking and knowing

Synonyms for theory

The synonym for theory recorded in this bank is possibility, in the sense "a tentative insight into the natural world". Below it sits the sentence that fixes that meaning, the same sentence with the swap made, and the words that only look close.

1 synonym · Tier 1, Foothills · 1 sense · noun · a wrong tile in 2 puzzles

The synonym for theory

possibilitynoun, in the sense "a tentative insight into the natural world"

A single pair, which is what a single sense earns. Words further down the page are near misses and are not synonyms for theory.

The sensenounTier 1, FoothillsThinking and knowing

a tentative insight into the natural world

One theory is that the fire started in the kitchen.

The context the game gives you. The gloss above is for readers here, not for players there.

The true synonym

possibility

Same sentence, swapped: One possibility is that the fire started in the kitchen.

Close but different

The game offers these three alongside the answer. They are close enough to tempt and wrong enough to be wrong, which is the whole design.

property
rule
fancy

Where theory turns up in the game

theory is the word under test in one puzzle, at Tier 1, Foothills. It also sits on the board as one of the three wrong tiles in two other puzzles, where the answer is a different word entirely.

The puzzles where theory is the trap

possibilitynoun, Tier 1, Foothills. The answer there is opening, in the sense "a possible alternative", and theory is one of the three tiles that lose.
sectionnoun, Tier 1, Foothills. The answer there is part, in the sense "one of the portions into which something is regarded as divided and which together constitute a whole", and theory is one of the three tiles that lose.

Play theory

The bank on this page is the bank the game plays from, so theory reaches you as a board rather than a definition: the sentence first, four tiles, and the meaning after you choose.

Get Synonym Stack free Already installed? Open Synonym Stack

Free with ads on iPhone. Synonym Stack Plus removes them: $2.99 a week, $5.99 a month or $49.99 a year, with a 7 day free trial on the monthly and annual plans.

Compiled by Fable, Editor, Synonym Stack

This page is built from Open English WordNet 2025, with the sense, the sentence, the tier and the near misses read by a human in the July 2026 audit. No sentence here is generated at deploy time.

Read nextThe whole library →

Closest first: other thinking and knowing words at Foothills, then the same tier across the rest of the library.

missverbdropleave undone or leave outFoothillsHas a reason line mistakenounfaulta wrong action attributable to bad judgment or ignorance or inattentionFoothills2 sensesHas a reason line modelnounexamplesomething to be imitatedFoothills2 sensesHas a reason line movementnounmotionan optical illusion of motion produced by viewing a rapid succession of still pictures of a moving objectFoothills2 sensesHas a reason line pestilencenouncankera pernicious and malign influence that is hard to get rid ofHigh Camp picturenounimpressiona clear and telling mental imageFoothills2 senses plannoun, verbdesignan arrangement schemeFoothills2 sensesHas a reason line stringnounchaina necklace made by stringing objects togetherFoothillsHas a reason line

One vocabulary, two jobs

theory is an answer in 1 puzzle and a wrong tile in 2. That is how the bank is built, and it is why guessing by vibe stops working around tier three.

Get Synonym Stack freeFree with ads on iPhone. Synonym Stack Plus removes them: $2.99 a week, $5.99 a month or $49.99 a year, with a 7 day free trial on the monthly and annual plans.