4th Grade Spelling Words
140+ essential spelling words for fourth graders (ages 9â10) â Greek roots, complex suffixes, academic vocabulary, irregular plurals, and the most commonly misspelled words at this level.
What Spelling Skills Do 4th Graders Learn?
Fourth grade marks a major shift: spelling becomes tied to vocabulary and subject knowledge. Children encounter academic words across science, social studies, and math that follow Greek and Latin patterns. By year's end, a typical student should be able to:
Greek Roots (36 Words)
About 60% of English words with two or more syllables have Greek or Latin roots. At 4th grade the focus is Greek â particularly roots that appear across science and technology vocabulary. Learning six roots unlocks dozens of words children will encounter throughout their education.
Practice Tip: "graph" (write) appears in photograph, paragraph, biography, geography, telegraph, and autograph. Have your child find the root hiding in each word and underline it. Visual identification of the shared part accelerates pattern recognition far faster than list drilling.
Complex Suffixes (24 Words)
Fourth graders encounter longer, more rule-governed suffixes that require understanding both the meaning and the spelling change rules. The -tion/-sion distinction is the most tested and most frequently confused.
Both make the /shun/ sound. Use -sion after a vowel or l/n/r (confusion, mansion). Use -tion after most consonants (action, fraction). When unsure, -tion is safer â it's far more common.
Means "full of" or "having the quality of." The base word sometimes changes spelling: fame â famous, glamour â glamorous.
-ment turns a verb into a noun (govern â government). -ness turns an adjective into a noun (happy â happiness). The y â i change applies before -ness.
Practice Tip: The -tion vs -sion decision is one of the most Googled spelling questions by adults too. The shortcut: if you can hear an "sh" sound clearly, try -sion first (confu-SION). If it sounds more like "chun," try -tion (na-TION). When still unsure, -tion wins by frequency.
Academic Vocabulary (16 Words)
Tier 2 academic words â the verbs and nouns that appear in test instructions and non-fiction text across all subjects â become critical in 4th grade. Children who can spell and understand these words have a measurable advantage on standardized assessments.
Practice Tip: Don't just spell these â use them. Ask your child to "analyze" what they had for lunch, or "compare" two TV shows. Using academic words in casual conversation dramatically speeds up both spelling retention and vocabulary depth.
Irregular Plurals (12 Words)
Most plurals follow simple rules (add -s or -es). Irregular plurals are the exceptions â and there are enough of them that 4th graders benefit from explicit categorization rather than treating each as a unique memorization challenge.
Practice Tip: Group the "unchanged" plurals together (deer, sheep, fish, moose) and tell children that these are "stubborn words that refuse to change." The quirky framing makes them easier to remember than treating each word as an isolated exception.
The full plural rules, with the exceptions â When to use -s, -es and -ies, why leaf becomes leaves but roof does not, and the words ending in o that follow no rule at all.
Most Commonly Misspelled 4th Grade Words
These eight words are responsible for a disproportionate share of spelling errors in 4th grade writing. Each has a reliable mnemonic that, once learned, sticks for life.
The full list: 100 commonly misspelled words â Every one with the misspelling people actually type and the single letter that trips them.
Let AI Generate Mnemonics for Your Child's Trickiest Words
SpellCrush's AI hint feature creates personalized, age-appropriate memory tricks for any word â just like the mnemonics above, but generated on demand for whatever your child is studying.
Start Free Practice âOr take the 4th grade spelling quiz: hear each word and tap the right spelling.
Weekly Practice Schedule for 4th Graders
Fourth graders are ready for more independent practice. Build in time for them to apply spelling knowledge in writing â not just isolated word drills:
Not sure your child is at 4th grade level?
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Free Online Spelling TestFrequently Asked Questions
What spelling words should a 4th grader know?
By the end of 4th grade, children should spell most two and three-syllable words correctly, use common Greek and Latin roots to decode unfamiliar words, add complex suffixes (-tion, -sion, -ous, -ive) accurately, and correctly spell academic vocabulary used across subjects.
What are Greek roots taught in 4th grade?
Key 4th grade Greek roots include: tele (far) as in telephone and telescope; graph (write) as in photograph and autograph; phon (sound) as in microphone and symphony; bio (life) as in biology and biography; geo (earth) as in geography and geology.
What is the hardest spelling pattern in 4th grade?
The -tion/-sion distinction trips up most 4th graders. The rule: after a vowel or l/n/r, use -sion (confusion, mansion, version); after most consonants, use -tion (action, fraction, nation). When unsure, -tion is more common and usually the safer guess.
How many words per week should a 4th grader study?
Most 4th grade curricula introduce 10â15 new spelling words per week, grouped by pattern. Quality beats quantity at this level â deeply understanding why 10 words are spelled the way they are is more valuable than shallowly memorizing 20.
How do I help my 4th grader remember commonly misspelled words?
Mnemonics are the most effective tool. "There's A RAT in sepARAte" and "1 Collar, 2 Socks for necessary (1C + 2S)" stick for decades. SpellCrush's AI hint feature generates personalized mnemonics for whatever word your child struggles with.
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