Odd One Out Vocabulary Game — Word Groups Quiz
Three words belong together, one does not. Tap the word that doesn't fit — based on shared roots, similar meanings, or subject category. Tiered from Grade 9 to SAT prep, with root-based false-friends, synonym-or-opposite traps, and cross-discipline category puzzles.
How to Play Odd One Out
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Choose a Difficulty
Grade 9 features common roots (port, aud, bio) and basic meaning pairs. Grade 10–11 adds nuanced roots and academic vocabulary. SAT Prep includes sophisticated reasoning about connotation, rhetoric, and etymology.
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Look at the Four Words
A type badge (Root, Meaning, or Category) tells you what the group has in common. Use this to guide your thinking: are these words related by origin, by definition, or by topic?
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Tap the Odd One Out
Tap the one word that doesn't belong with the other three. The choice is immediate — no confirmation needed. All four tiles then light up to show the result.
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Read the Explanation
A short explanation tells you what the three matching words share. This turns every question — including wrong answers — into a learning moment.
Key Features
90 Questions Across 3 Difficulty Tiers
30 questions each for Grade 9, Grade 10–11, and SAT Prep — covering root-based false friends, synonym/antonym meaning traps, and cross-discipline category puzzles from literature to science.
Three Challenge Types in Every Tier
Root: three words share a Latin/Greek root, one looks similar but comes from a different origin (e.g. terror vs. terrain). Meaning: three words are synonyms, one is the antonym. Category: three belong to one subject field, one does not.
Instant Reveal With Explanation
Tap a word and the answer is immediately revealed — all four tiles show whether they belong or not, and a one-line reason explains what the three that belong share. Learn from every question, right or wrong.
Fresh Sky Blue Design — Tap, Reveal, Move On
A clean sky-blue background with white cards and a fast single-tap flow — no check button, no waiting. The fastest of the vocab game series to play.
Frequently Asked Questions
What are the three types of odd-one-out questions?
Root questions ask you to spot the false etymological friend — e.g. terror looks like terrain and terrestrial but comes from terrere (frighten), not terra (earth). Meaning questions put three synonyms with one antonym. Category questions mix one word from a different subject or genre.
Is the Type badge always shown?
Yes — the badge (Root, Meaning, or Category) appears at the top of every question. It narrows the search space without giving away the answer, making the game faster to reason through.
What does the Hint reveal?
The hint shows exactly what the three matching words share, e.g. 'The three that belong come from the root PORT (carry)'. This tells you the connection but not which word is the odd one — you still have to apply the knowledge.
How does scoring work?
Correct answers earn 150 (Grade 9), 200 (Grade 10–11), or 300 (SAT Prep) points. Consecutive correct answers add a 50-point streak bonus for each round after the first. Wrong answers reset the streak and cost a life — lose all 3 lives to end the game.
Is this good for SAT prep?
Yes. The SAT frequently tests vocabulary in context, etymology awareness, and the ability to distinguish words that look similar but mean different things. The Root and Meaning question types directly mirror these skills.
Can I play a specific type only?
Not yet — questions of all three types are shuffled together within each difficulty tier. This mix keeps the game unpredictable and trains multiple reasoning strategies at once.