R-Controlled Vowel Words
When the letter r follows a vowel, it changes the vowel sound completely: the a in "car" sounds nothing like the a in "cat" or "cake". Teachers call these r-controlled vowels, and students often meet them as the "bossy r" - the r takes charge of the vowel in front of it.
There are three r-controlled sounds to learn but five spellings. AR says /ar/ as in car and star. OR says /or/ as in fork and corn. And er, ir, and ur all say the same sound /er/, as in her, bird, and turn - which is exactly why these words need to be memorized by pattern rather than sounded out letter by letter.
The lists below come straight from our Grade 2 spelling curriculum: AR words, OR words, and the tricky ER/IR/UR group, each with printable worksheets and free online practice.
The rule
When a vowel is followed by r in the same syllable, the r changes the vowel sound: ar as in car, or as in fork, and er, ir, ur, which all make the same /er/ sound as in her, bird, and turn.
R-Controlled Vowel Words by grade, from our curriculum
These are the exact lists our K-6 spelling curriculum teaches. Every list links to free online practice and printable worksheets - no account needed.
AR (R-controlled A) Words
Grade 2- car
- far
- dark
- yard
- farm
- star
- hard
- park
- sharp
- art
OR (R-controlled O) Words
Grade 2- for
- corn
- storm
- short
- sport
- north
- horse
- born
- fork
- morning
ER/IR/UR (R-controlled) Words
Grade 2- her
- term
- bird
- girl
- sir
- fur
- turn
- burn
- hurt
- first
How the pattern works
An r-controlled vowel is neither long nor short: the vowel and the r fuse into a single new sound. That is why sounding out "b-i-r-d" with a short i fails - the ir works as one unit.
The hardest part is that /er/ has three common spellings (er, ir, ur) that sound identical. There is no rule that fully decides between them, so curricula group the words by spelling and build pattern memory: her, fern, verb (er); bird, girl, first (ir); turn, hurt, nurse (ur).
ER is the most common spelling of /er/, especially at the ends of words (teacher, bigger, winter), which is a useful probability hint for spellers.
Common mistakes to watch for
- Swapping er/ir/ur ("gurl" for girl, "birn" for burn) - expected while pattern memory builds; targeted list practice fixes it.
- Writing the vowel sound they hear instead of the team ("brd" or "bord" for bird).
- Confusing ar and or after w, where the sounds shift (war sounds like "wor", work sounds like "werk"). Treat w-words as their own mini-group.
- Reading errors leaking into spelling: pronouncing "fir" and "fur" identically is correct, so students must learn which word uses which spelling by meaning.
Example sentences
- car - The red car stopped at the corner.
- fork - She set a fork beside every plate.
- her - That backpack is her favorite.
- bird - A small bird landed on the fence.
- turn - It is your turn to roll the dice.
Usually taught in Grade 2, after silent e and alongside vowel teams. Our curriculum teaches AR first, then OR, then the er/ir/ur group together so students can compare the three spellings of the same sound.
Frequently asked questions
What is an r-controlled vowel?
A vowel whose sound is changed by the r that follows it, so it is neither long nor short: the ar in car, or in fork, and er/ir/ur in her, bird, and turn. Teachers often call it the bossy r.
Why do er, ir, and ur sound the same?
All three spell the single sound /er/. English kept the different spellings from its history, so words like her, bird, and turn must be learned by pattern - there is no rule that predicts which spelling a word uses.
What grade are r-controlled vowels taught?
Most programs teach them in Grade 2, after short vowels and silent e. Our curriculum covers AR, then OR, then ER/IR/UR as a comparison set.
What are examples of r-controlled vowel words?
AR: car, star, farm, park. OR: fork, corn, storm, north. ER/IR/UR: her, fern, bird, girl, turn, hurt. The full graded lists on this page come from our curriculum and are printable.
Turn these lists into practice in one click
Free spelling games, tests, and printables for every list above - built for K-6 classrooms and home practice. No signup, no cost.