How it works
Stomach ends in ch said as k, muscle hides a c and knuckle starts with a silent k. These 90 body part words open on ten such traps, then run in three grade bands from arm and leg to diaphragm and cochlea.
Read the full guide
The lists by grade band
List 1 mixes the grades: ten words whose letters do not match their sound. Level 1, for kindergarten to 2nd grade, has three-letter and four-letter words (hip, chin, neck). Level 2, for 3rd to 5th grade, has vowel pairs (throat, waist), compounds (eyebrow, kneecap) and words for inside the body (kidney, spine). Level 3, for 6th grade and up, has science names: femur, larynx, cartilage. The bands are only our suggestion.
The silent letters, one by one
Knee, knuckle and kneecap start with a silent k, wrist with a silent w. Thumb and limb end in a silent b, calf and palm hide an l, and diaphragm a g. In trachea and cochlea, as in stomach, ch is said as k.
- Muscle comes from Latin musculus, little mouse, says the American Heritage Dictionary; the c of musculus stayed in the spelling.
- Stomach, trachea and cochlea come from Greek words the American Heritage Dictionary writes with kh: stomakhos, trakheia, kokhlias.
Questions and answers
How do you spell stomach?
S, t, o, m, a, c, h: an o that sounds like the u in drum, then ch said as k. There is no e at the end; the e belongs to ache, as in stomachache.
Which body parts are compound words?
List 5 has ten written as one word: eyebrow, eyelash, eyelid, forehead, fingernail, kneecap, eardrum, backbone, collarbone and windpipe. Earlobe is left out because the American Heritage Dictionary also allows ear lobe.
What are hard body part words to spell?
The Level 3 science names. Diaphragm has a silent g, coccyx has a double c, then y and x, and larynx ends in ynx. Esophagus is left out: the American Heritage Dictionary also allows oesophagus, and the test takes one spelling.
Is it humerus or humorous?
Humerus is the bone that runs from shoulder to elbow; humorous means funny. They sound the same, so List 7 reads The humerus runs from shoulder to elbow and marks humorous wrong as a sound-alike.