Keentune
Adaptive skill practice — find your level, get sharper.

Spelling practice

Adding -ed
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Add -ed to “prefer.” Which spelling is correct?
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Spell the words people most often get wrong
Master the spellings that trip people up — the doubling rule (beginning, occurred), i-before-e except after c (believe vs receive), silent letters we skip in speech (February, government), the -ance/-ence endings, and the notorious hard words (accommodate, liaison, minuscule). Two formats mirror real entry-level exams: pick the correctly spelled word for a sentence, and spot the misspelled word in a list. Every explanation names the rule, the exact letter people get wrong, and a mnemonic you keep. Difficulty scales from everyday words to genuinely tricky ones.
• Meets you at your level — never too easy, never too hard.
• Adapts every question to how you’re doing.
• Tracks your level over time. Skill practice, not a test.

New here? Read the Spelling guide

A free 16-minute primer — the mental model, the mistakes beginners make, and what to practice first.

Curriculum

51 concepts across 9 chapters, from foundations through advanced practice — each one a concept the adaptive question bank can teach and test.

A. A method for any spelling choice

7

B. Adding suffixes

9

C. Prefixes and doubled letters

5

D. Ie and ei

3

E. Endings that sound alike

10

F. Letters that speech hides

6

G. Plurals

3

H. Words that sound alike

4

I. Borrowed words, names and American forms

4
View the full curriculum →
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Spelling on exams

Spelling is one of the skills tested on these exams. Each prep page lays out what the real test covers and where this skill fits.
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